| Cynanchum absconditum Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum abukumense Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum abyssinicum Decne. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum abyssinicum var. tomentosum Oliv. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum acerifolium (Lasser & Maguire) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum acidum (Roxb.) Oken | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum aculeatum (Desc.) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatifolium (Decne.) Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatum Humb. & Bonpl. ex Schult. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatum Thunb. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatum Buch.-Ham. ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatum (Benth.) K.Schum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum acuminatum (C.Morren Decne.) Matsum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum acutifolium (Phil.) Reiche | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum acutum L. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum acutum var. longifolium (G.Martens) Ledeb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum acutum subsp. sibiricum (Willd.) Rech.f. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum adalinae (K.Schum.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum adalinae subsp. mannii (Scott-Elliot) Bullock | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum adriaticum (Beck) Fritsch | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum aemulans (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum aequilongum Choux | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum affine Hemsl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum africanum R.Br. [Invalid] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum africanum (L.) Hoffmanns. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum africanum var. africanum | Synonym |  | TRO |  | 
	
		| Cynanchum africanum var. crassifolium (R.Br.) N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum alatum Wight & Arn. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum albidum Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum albiflorum (Franch. & Sav.) Koidz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum albiflorum (Urb.) Woodson [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum albiflorum (Griseb.) Stearn [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum albonervum R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum albovianum Kusn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum album Pers. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum altiscandens K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum altissimum (Jacq.) Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ambiguum (Maxim.) Kom. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ambositrense Choux | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ambovombense (Liede) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ampanihense Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum amphiboleum C.K.Schneid. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum amplexicaule (Siebold & Zucc.) Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum amplexicaule var. castaneum Makino | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum amplexicaule f. castaneum (Makino) C.Y.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum amplexicaule f. multicaurium (I.C.Chung) W.T.Lee | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum analamazaotrense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum anderssonii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum andinum Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum andringitrense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum androsaemifolium Vahl ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum anegadense (Britton) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum angavokeliense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum angustifolium Pers. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum angustifolium Wight & Arn. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum angustifolium (Decne.) Morillo [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum annulare B.Heyne ex Wight | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ansamalense Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum antandroy Desc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum anthonyanum Hand.-Mazz. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum anthopotamicum Hand.-Mazz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum antsiranense (Meve & Liede) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum aphyllum L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum aphyllum Vell. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum aphyllum (Thunb.) Schltr. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum apocynellum (Gleason & Mold.) Spellman | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum appendiculatopsis Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum appendiculatum Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum arboreum Forssk. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum arenarium Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum arenosum (Decne.) K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum argel Delile | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum argentinense Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum arizonicum (A.Gray) Shinners | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum arnottianum (Wight) Wight | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ascyrifolium (Franch. & Sav.) Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum asperum Mill. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum astephanoides (A.Gray ex S.Watson) Standl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum asterion Vell. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum asthmaticum Buch.-Ham. ex Hook.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum atacamense Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum atratum Bunge | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum atratum f. multinerve (Franch. & Sav.) T.Yamaz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum atropurpureum (E.Mey.) D.Dietr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum atrorubens (Schltr.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum atrovirens (Rusby) Sugden | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum atrum (Jord. & Fourr.) Breistr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum auriculatum Royle ex Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum auriculatum var. amamianum (Hatus.) T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum auriculatum var. sinense T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum austrokiusianum Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum auyantepuiense Steyerm. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum avilense Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bahamense (Griseb.) Gillis | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum balense Liede | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum balfourianum (Schltr.) Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum balslevii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum barbadense (Schltr.) R.A.Howard | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum barbatum L.f. ex Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum barbigerum (Scheele) Shinners | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum baronii Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum batangense P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum beatricis Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum beckii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bekinolense Choux | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum belloi P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bernardii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bicampanulatum M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bicolor Andrews | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bidens (E.Mey.) D.Dietr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bifidum Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum biondioides W.T.Wang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum birostratum Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bisinuatum Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum blandum (Decne.) Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum blodgettii (A.Gray) Shinners | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum blyttioides Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bodinieri Schltr. ex H.Lév. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum boerhaviifolium Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum boissieri Kusn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bojerianum (Decne.) Choux | Accepted |  | TRO |  | 
	
		| Cynanchum boldinghii (Schltdl.) Aa & Stoffers | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bolivarense R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bonariense (Decne.) T.Mey. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bonplandianum Schult. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bosseri Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum boudieri H.Lév. & Vaniot | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum boudieri subsp. boudieri | Synonym |  | TRO |  | 
	
		| Cynanchum boveanum Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bowmannii S.T.Blake | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum brachyphyllum K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum brachystelmoides P.I.Forst. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum brachystephanum (Griseb.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bracteatum Thunb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum brandtii Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum brasiliense (Morillo) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum brevicoronatum M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum brevidens N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum brevidens var. zambesiaca N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum bricenoi Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum broadwayi (Schltr.) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum brownianum Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum brunonis Gillies ex Hook. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum bulligerum (Speg.) Macloskie | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum bungei Decne. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum buntingii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cabulicum Bornm. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum caespitulosum R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum calcareum H.Ohashi | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum calcicola Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum californicum (Benth.) Moran | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum callialatum Buch.-Ham. ex Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum calycinum (Schltr.) Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum campii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum candolleanum Gillies ex Hook. & Arn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum canescens (Willd.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum canoi Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum capense L.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum capillare Thunb. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum carautanum (Fontana & Schwein.) Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum cardiostephanum Rech.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cardozoi Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum caribaeum Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum carmenaemiliae Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum carnevalii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum carnosum Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum carnosum (R.Br.) Schltr. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum carolinense Jacq. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cassythoides Suess. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cathayense Tsiang & H.T.Zhang | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum caudatum Vell. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum caudatum (Miq.) Maxim. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum caudiculatum Rapini | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum caudigerum R.W.Holm | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum celebicum Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum chanchanense Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum cheesmanii Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cheiranthoides Dombey ex Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum chekiangense M.Cheng | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum chiapense (A.Gray) Standl. & Steyerm. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum chilense (Phil.) Malme | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum chimantense Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum chimboracense Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum chinense R.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum chirindense S.Moore [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum chouxii Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum christineae P.I.Forst. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ciliatum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cirrhosum Sw. ex Schult. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum clausum (Jacq.) Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum clavidens N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum clavidens subsp. hastifolium Liede | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum colellae Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum collinum (S.F.Blake) Standl. & Steyerm. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum colombianum (Schltr.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum comorense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum compactum Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum compactum var. imerinense Desc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum complexum N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum confusum R.W.Holm | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum congestum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum congolense De Wild. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum connivens Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum contiguum W.D.J.Koch | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum contrapetalum Sundell | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cordatum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cordifolium Retz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cordifolium (E.Mey.) D.Dietr. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum corymbosum Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum costantinianum Tsiang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum crassiantherae Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum crassifolium R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum crassifolium Hatus. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum crassipedicellatum Meve & Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum crassiusculum (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum crispiflorum Sw. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum crispum Thunb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum crispum Jacq. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cristalinense Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum cuatrecasasii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum cubense (A.Rich.) Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cucullatum N.E.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum cuspidatum Thunb. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum cuspidatum Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum cyathiforme (Sundell) W.D.Stevens | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum dahuricum Willd. ex Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum dalhousiae Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum danguyanum Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum darvasicum (B.Fedtsch.) Kamelin | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum darwasicum B. Fedtsch. | Unresolved |  | TRO |  | 
	
		| Cynanchum davuricum R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum de-filippii Delponte | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum decaisneanum R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum decaisneanum (Schltr.) Alain [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum decaisnianum Desc. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum decaryi Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum decipiens C.K.Schneid. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum decipiens (Schltr.) Alain [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum decorsei (Costantin & Gallaud) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum defoliascens K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum deltoideum Hance | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum deltoideum Hook.f. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum denigratum Elmer [Invalid] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum densiflorum W.D.Stevens | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum dentatum K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum denticulatum Vahl | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum descoingsii Rauh | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum descolei T.Mey. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum deserticola A.R.Flores & J.M.Watson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum dewevrei De Wild. & T.Durand | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum diazmirandae Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum dichasiale O.Schwarz | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum dickinsii (Franch. & Sav.) Nakai | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum diemii T.Mey. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum diffusum (Gillies ex Hook.) Hook. & Arn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum dimidiatum (Hassk.) Boerl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum dioscoridis Thunb. | Unresolved |  | TRO |  | 
	
		| Cynanchum discolor Sims | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum doianum Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum dombeyanum (Decne.) Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum domingense (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum dorrii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum dubium Kitag. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum duclouxii M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum duidae R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum echinatum Thunb. | Unresolved |  | TRO |  | 
	
		| Cynanchum ecuadorense Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum edule Jum. & H. Perrier | Accepted |  | TRO |  | 
	
		| Cynanchum eggersii (Schltr.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum eichleri (E.Fourn.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ekmanii Alain | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ekmanii (Malme) Sundell [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum elachistemmoides (Liede & Meve) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum elegans (Benth.) Domin | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ellemannii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ellipticum (Harv.) R.A.Dyer | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ephedroides (Griseb.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum erectum L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum erikseniae Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum erubescens R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum erythranthum Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum eulaxiflorum Lundell | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum euphorbioides D.Dietr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum eurychitoides K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum eurychiton (Decne.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum eurystephanum Malme | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum exasperatum R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum excelsum Desf. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum extensum Jacq. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum falcatum Hutch. & E.A.Bruce | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum fallax Hicken | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fasciculiflorum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum fawcettii (Schltr.) Stearn | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fernandezii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum filiforme Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum filisepalum (Standl.) L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum filliforme L.f. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fimbriatum Kunth | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum fimbriatum Choux [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum fimbricorona Liede [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fimbricoronum P.T.Li [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fissum Pomel | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum flavens Thunb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum flavidens N.E.Br. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum flavum Thunb. ex Hook.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum floribundum R.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum floridum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum floriferum Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum foetidum (Cav.) Kunth | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum folotsioides Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum fordii Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum formosanum (Maxim.) Hemsl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum formosanum var. ovalifolium Tsiang & P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum formosum N.E.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum forrestii Schltr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum forrestii var. balfourianum Schltr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum forrestii var. stenolobum Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum franchetii Nakai | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum franciscoi Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum fraternum N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum freemanii (N.E.Br.) Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fruticulosum Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum funale Poir. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum funebre (Boiss. & Kotschy) Kusn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum fuscatum (Hornem.) Link | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum fusculum (C.Wright) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum fuscum Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum galgalense Liede | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ganglinosum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum gentryi (Morillo) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum gerrardii (Harv.) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum gerrardii subsp. bekinolense (Choux) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum gerrardii subsp. lenewtonii (Liede) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum gilbertii Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum giraldii Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum glaberrimum (Woodson) L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum glabrius (Markgr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum glabrum Nakai | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum glabrum var. rotundifolium Honda | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum glabrum f. viridescens Murata | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum glaucescens (Decne.) Hand.-Mazz. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum glaucum Wall. ex Wight | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum glomeratum Bosser | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum glossostemma Lillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum gobicum Grubov | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum goertsianum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum gonavense Jiménez | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum gonoloboides Schltr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum gossweileri S.Moore | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum gracile (Decne.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum gracilipes Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum gracillimum Wall. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum graminifolium (Griseb.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum graminiforme Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum granatense (Baill.) Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum grandidieri Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum grandiflorum Cav. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum grandifolium Hemsl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum grayanum (Maxim.) Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum grayi Shinners | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum grisebachianum (Schltr.) Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum grisebachii (M.Gómez) Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum guanchezii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum guatemalense Dugand | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum guehoi Bosser | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum guianense Spreng. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum guianense (Decne.) R.W.Holm [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum haitiense Jiménez | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hamatum (E.Mey.) D.Dietr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hancockianum (Maxim.) Iljinski | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hardyi Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum harlingii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum harrisii (Schltr.) Stearn | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hartii (Schltr.) Proctor | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum haruna-montanum Honda | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hastatum Lam. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hastatum Pers. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hastifolium K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum hastifolium N.E.Br. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hastifolium subsp. clavidens (N.E.Br.) Liede | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hatusuimai P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum haughtii Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum helicoideum Choux | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum henryi Warb. ex Diels | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum heteromorphum Vatke | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum heterophyllum Delile | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum heydei Hook.f. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum heyneanum Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hickenii Malme | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum hieronymi (Lorentz) Hicken | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hirsutum Vahl | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hirsutum (Michx.) Pers. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hirsutum Vell. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hirsutum Sessé & Moc. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hirsutum Costantin [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hirtellum (Oliv.) V.M.Badillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hirtum L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hirtum Blanco [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hoedimeerium Bakh.f. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum holmianum Steyerm. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum holstii K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hookerianum Steud. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum huberi Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum humbert-capuronii Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum humbertii Choux | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum humboldtianum Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum humile Falc. ex Hook.f. [Invalid] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum huteri (Vis. & Asch.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum hydrophilum Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum hystrix Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ikema Siebold ex Ohwi | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum implicatum (Jum. & H.Perrier) Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum inaguense (Vail) R.A.Howard & Dunbar | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum inamoenum (Maxim.) Loes. ex Gilg. & Loes. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum inconspicuum Griff. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum indicum Burm.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum indicum Lam. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum infimicola L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum inodorum Lour. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum insigne (N.E.Br.) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum insulanum (Hance) Hemsl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum insulanum var. insulanum | Synonym |  | TRO |  | 
	
		| Cynanchum insulanum var. lineare (Tsiang & H.T.Zhang) Tsiang & H.T.Zhang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum intermedium N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum intricatum K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum inundatum Lem. ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ipecacuanha Willd. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum isidrensis Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum itremense Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum jacquemontianum Decne. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum jahnii Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum jalicola (Juz.) Juz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum jaliscanum (Vail) Woodson | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum jamaicense (Griseb.) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum japonicum E.Morren & Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum jaramilloi Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum javanicum (Koord.) Bakh.f | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum javanicum (Koord.-Schum.) Bakh. f. | Accepted |  | TRO |  | 
	
		| Cynanchum jenmanii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum juliani Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum juliani-marnieri Desc. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum jumellei Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum junciforme (Decne.) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum juzepczukii (Pobed.) Borhidi | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum kamaense Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum kaschgaricum Y.X.Liou | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum katoi Ohwi | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum kenouriense Wight | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum kenowiense (Wight) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum kimarovii Ijinsk. | Unresolved |  | TRO |  | 
	
		| Cynanchum kingdonwardii M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum kintungense Tsiang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum kiusianum Nakai | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum kiyohikoanum Honda | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum komarovii Iljinski | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum krameri (Franch. & Sav.) Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum kunthii (Decne.) Standl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum kuznetzowii Bordz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum kwangsiense Tsiang & H.T.Zhang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum laeve (Michx.) Pers. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum laeve (Blume) K.Schum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum laevigatum Vahl ex Decaisne in de Candolle | Unresolved |  | TRO |  | 
	
		| Cynanchum lanceolatum Poir. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum lanceolatum Kunth | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum lancifolium Schumach. & Thonn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum lancifolium Hook. & Arn. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum lanhsuense T.Yamaz. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum lasiocarpum Koidz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum latifolium Schumach. & Thonn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum laxum Bartl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum lechleri Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum lecomtei Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ledermannii Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum leianthus Domokos | Unresolved |  | TRO |  | 
	
		| Cynanchum lenewtonii Liede | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum leptocladum (Decne.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum leptolepis (Benth.) Domin | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum leptophyllum (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum leptostephanum Diels | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum leucanthum Jacq. ex J.F.Gmel. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum leucanthum (K.Schum.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum leucophellum Diels | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum leveilleanum Schltr. ex H. Lév. | Synonym |  | TRO |  | 
	
		| Cynanchum liebiana (F.Muell.) P.I.Forst. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum liesneriana L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum liesnerianum L.O. Williams | Synonym |  | TRO |  | 
	
		| Cynanchum lightii Dunn | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum lignosum (Vail) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ligulatum (Benth.) Woodson | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum likiangense W.T.Wang | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum limprichtii Schltr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum lineare N.E.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum lineare (Bello) Alain [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum lineare subsp. lineare | Synonym |  | TRO |  | 
	
		| Cynanchum linearifolium Hemsl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum linearisepalum P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum linifolium (Balf.f.) Bullock ex G.B.Popov | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum liukiuense Warb. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum loheri Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum longecalicinum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum longicoronatum L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum longiflorum Jacq. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum longifolium G.Martens | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum longipedunculatum M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum longipes N.E.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum longirostrum (K.Schum.) W.D.Stevens | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum lopezpalaciosii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum louiseae Kartesz & Gandhi | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum luteifluens (Jum. & H.Perrier) Desc. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum luteifluens var. luteifluens | Synonym |  | TRO |  | 
	
		| Cynanchum luteolum Vahl ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum luteum Steud. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum luteum Spreng. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum luteynii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum luzonicum Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum lycioides Steud. ex D.Dietr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum lysimachioides Tsiang & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum maasii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum maccartii Shinners [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum maccartii var. maccartii | Synonym |  | TRO |  | 
	
		| Cynanchum macraei Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum macranthum Nakai [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum macranthum Jum. & H. Perrier | Accepted |  | TRO |  | 
	
		| Cynanchum macrolobum Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum macrophyllum Pers. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum macrophyllum Thunb. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum macrophyllum (Siebold & Zucc.) Matsum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum macrorhizon Carrière | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum madagascariense K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum madecassum Desc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum maeoticum Kleopow | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum magale Buch.-Ham. ex Dillwyn | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum magdalenicum Dugand | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum magnificum Nakai [Invalid] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mahafialense Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mairei Schltr. ex H.Lév. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum manarae Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mandshuricum (Hance) Hemsl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mannii (Scott-Elliot) N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mariense (Meve & Liede) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mariquitense Mutis | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum maritimum (Jacq.) Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum maritimum Salisb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum marnierianum Rauh | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum marsdenioides Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum martinicense (Schltr.) R.A.Howard | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum masoalense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum matsudanum Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum matsumurae T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mauritianum Lam. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mauritianum Bojer ex Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum maximoviczii Pobed. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum maximowiczianum (Warb.) Nakai | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mazzuchii (Speg.) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum medinae Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum medium R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum medium (Decne.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum megalanthum M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum melanophleum Willd. | Unresolved |  | TRO |  | 
	
		| Cynanchum melanthos Poir. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum melanthum (Decne.) T.Mey. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum membranaceum (Liede & Meve) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum menarandrense Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mensense (Schweinf.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum meridense Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum messeri (Buchenau) Puech | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum messeri (Buchenau) Jum. & H. Perrier | Unresolved |  | TRO |  | 
	
		| Cynanchum messeri subsp. mahafalense (Jum. & H. Perrier) Liede | Synonym |  | TRO |  | 
	
		| Cynanchum mevei Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mexicanum Brandegee | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mexicoense P.T.Li [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum meyeri (Decne.) Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum micranthum Thunb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum microcentrum Tsiang | Unresolved |  | TRO |  | 
	
		| Cynanchum microphyllum Kunth | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum microphylum Raf. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum microstegium K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum microstemma (Turcz.) Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum minahassae Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum minus K.Koch | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum minutiflorum K.Schum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mirifolium (Gleason & Moldenke) R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum miserum L.O.Williams | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum molle (E.Mey.) D.Dietr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum monense (Britton) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mongolicum (Maxim.) Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mongolicum (Maxim.) Kom. | Accepted |  | TRO |  | 
	
		| Cynanchum monspeliacum L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum montevidense Spreng. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mooreanum Hemsl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum moramangense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum moratii Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum morilloi P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum morrenioides Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mossambicense K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum mucronatum Andrews | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum mucronatum Kunth [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mucronatum (Decne.) Reiche [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mucronatum (Spreng.) N.E.Br. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum mulegense Wiggins | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum muliense Tsiang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum multicaurium I.C.Chung | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum multiflorum (Mart.) Spreng. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum multiflorum (E.Fourn.) K.Schum. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum multinerve (Franch. & Sav.) Matsum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum multinervium Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum muricatum (Blume) Boerl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum myrianthum (Schltr.) Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum myrtifolium Hook. & Arn. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum myrtifolium Poepp. ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum nanellum P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nanissimum Liede [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nanum Buch.-Ham. ex Wight | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum nanum Skottsb. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum napiferum Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum natalitium Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum neei Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nematostemma Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum neopommeranicum Schltr. | Unresolved |  | TRO |  | 
	
		| Cynanchum nielsenii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum nigricans Vahl ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum nigrum Cav. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nigrum (L.) Pers. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nikoense (Maxim.) Makino | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nipponicum Matsum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nipponicum f. rotundifolium (Honda) T.Yamaz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum nitidum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nivale Nyman | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nivale (Boiss. & Heldr.) Beck | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nodosum (Jum. & H.Perrier) Desc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum northropiae (Schltr.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum nubicola Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nummulariifolium Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum nummulariifolium var. biflorum (Phil.) Reiche | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obliquum Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obovatum (Decne.) Choux | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obovatum R.W.Holm [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obscurum K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obtusifolium L.f. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum obtusifolium Rich. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum obtusifolium var. obtusifolium | Synonym |  | TRO |  | 
	
		| Cynanchum obtusifolium var. pilosum (R.Br.) Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum occidentale (Spreng.) Jiménez [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum odoratissimum Lour. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum odoratum Hook. & Arn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum officinale (Hemsl.) Tsiang & H.T.Zhang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum oleifolium Nectoux | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum omissum Bullock | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ophiticola Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum orangeanum (Schltr.) N.E.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum oresbium (Bruyns) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum orientale Willd. ex Spreng. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum orientense Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum otophyllum C.K.Schneid. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ovalifolium Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ovalifolium var. angustifolium Ridl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ovatum Thunb. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ovatum (E.Mey.) Druce [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ovatum (Benth.) Domin [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum ovobatum R.W. Holm | Unresolved |  | TRO |  | 
	
		| Cynanchum oxyphyllum (Turcz.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pachycladon Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pachylepis (F.M.Bailey) Domin | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pachyphyllum (Decne.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pallidum Salisb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pallidum Sessé & Moc. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum palmeri (S.Watson) S.F.Blake | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum palmeri (S.Watson) Shinners [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum palmeri var. peninsulare (S.F.Blake) I.M.Johnst. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum palustre (Pursh) A.Heller | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pamirense Tsiang & H.T.Zhang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum paniculatum (Bunge) Kitag. ex H.Hara | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pannonicum Borhidi | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum papillatum Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum papillosum Weim. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum paralias (Decne.) P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum paramorum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum paraquense Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum parviflorum Sw. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum parviflorum (Decne.) K.Schum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum patagonicum (Phil.) Malme | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pauciflorum R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pauciflorum (Miq.) Matsum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pearsonii N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pedunculare Lam. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pedunculatum R.Br. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pedunculatum Thunb. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pendulum Poir. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum penicillatum (Griseb.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum peninsulare S.F.Blake | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum peraffine Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum perrieri Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum peruvianum (Schltr.) Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum petignatii Liede & Rauh | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum petrense Hemsl. & Lace | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum phillipsonianum Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum phylladen Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum physocarpum Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum picardae (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pichinchense K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pictum Vahl | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pietrangelii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pilosum R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pingshanicum M.G.Gilbert & P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum planiflorum (Jacq.) Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum planifolium L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pleianthum K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum polyanthum K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum praecox Schltr. ex S.Moore | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum prevostii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pringlei (A.Gray) Henr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum priorii (Rendle) Stearn | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum proctorianum Spellman & Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum procumbens Medik. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum prostratum Cav. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum puberulum F.Muell. ex Benth. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pubescens Bunge | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pubipetalum Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pumilum (Decne.) Bornm. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum punctatum (Massart) Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum puncticulatum Koidz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum × purpurascens C.Morren & Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum × purpurascens (C.Morren & Decne.) Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum purpureiflorum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum purpureum (Pall.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pusillum Spreng. ex Fourn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum pusilum Grubov | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pycnoneuroides Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum pygmaeum Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum pyrotechnicum Forssk. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum quitense K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum (Jacq.) Jacq. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum Brandegee [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum var. cyathiforme Sundell | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum var. guatemalense (Dugand) Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum var. rensonii (Pittier) Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum racemosum var. unifarium (Scheele) Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum raddeanum (Albov) Kusn. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum radians (Forssk.) Lam. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum radiatum Jum. & H.Perrier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rauhianum Desc. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum readii (Schltr.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rectum Forssk. ex Decne. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum recurvum (Rusby) Spellman | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum reflexum (Hemsl.) Pittier | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rehmannii (Boiss.) Kusn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rendlei Stearn | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rensonii (Pittier) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum repandum (Decne.) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum resiliens (B.R.Adams & R.W.K.Holland) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum reticulatum Retz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum reticulatum Buch.-Ham. ex Hook.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum retropilum Nakai [Invalid] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum revolutum R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum richardianum Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum riometense Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rioparanense Sundell | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum riparium Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum robertii (S.Moore) Malme | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum robertsoniae Liede | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rockii M.G.Gilbert & P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rodriguezii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum roraimense (Schltr.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum roseum R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum roseum Chiov. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rossicum Kleopow | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rossicum Borhidi | Synonym |  | TRO |  | 
	
		| Cynanchum rossii Rauh | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rostratum Vahl | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rotatum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rotatum Sessé & Moc. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rotiforme P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rotundifolium Thunb. ex Decne. [Invalid] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum rotundus M.E. Jones | Unresolved |  | TRO |  | 
	
		| Cynanchum roulinioides (E.Fourn.) Rapini | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum roylei Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rubellum (Franch. & Sav.) Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rubens L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rubricoronae Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rugosum (Turcz.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum ruizteranii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rungweense Bullock | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum rupicola (Urb.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rusbyi Malme | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum rusillonii Hochr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum saccatum W.T.Wang | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum saepimentorum (Brandegee) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum × sakaianum Honda | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum salinarum (Griseb.) Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum samuelssonii Malme | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sarcostemma Lillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sarcostemmatoides K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sauvallei Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum savannarum Alain | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum savatierii Koidz. | Unresolved |  | TRO |  | 
	
		| Cynanchum scabrum Schumach. & Thonn. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum scandens (Sommier & Levier) Kusn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum schimperi Hochst. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum schistoglossum Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum schizocoronum Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum schlechtendalii (Decne.) Standl. & Steyerm. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum schlechterianum Warb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum schmalhausenii Kusn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum scoparium Nutt. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum scopulosum Bosser | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum seimundii Ridl. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum senegalense Sieber ex Decne. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sepicola (Pittier) L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sepium (Decne.) Standl. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum serpyllifolium Kunth | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sessei P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sessiliflorum (Decne.) Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sibiricum Willd. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sibiricum (L.) R.Br. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sibiricum var. australe (Maxim.) Maxim. ex Kom. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sibiricum var. gracilentum Nakai & Kitag. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sibiricum var. latifolium Kitag. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum siderocalyx Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sieboldii (Franch. & Sav.) Ohwi | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sigmoideum Correll | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sigridiae Meve & M.Teissier | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sinaloense (Brandegee) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sinoracemosum M.G.Gilbert & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sobradoi Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sodiroi K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum somaliense (N.E.Br.) N.E.Br. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sonorense Moran | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum speciosum (Boiss. & Spruner) Nyman | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum spruceanum Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stannardii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum staubii Bosser | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum stauntonii (Decne.) Schltr. ex H.Lév. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum stellatum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum stellatum Pobed. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum stelligerum P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum stenoglossum (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stenolobum (Decne.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum stenomeres Standl. & Steyerm. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stenophyllum Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stenospira K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum steppicola Hand.-Mazz. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stepposum (Pobed.) Juz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum stipitatum Correll | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum stoloniferum (B.R.Adams & R.W.K.Holland) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum streptanthum Malme | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum strictum (Gleason & Moldenke) R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum subcoriaceum Schltr. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum suberosum L. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum suberosum Kunth [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sublanceolatum (Miq.) Matsum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum sublanceolatum f. albiflorum (Franch. & Sav.) T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sublanceolatum var. kinokuniense T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum subpaniculatum Woodson | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum subtilis Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum subulatum Vell. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum subvolubile Schumach. & Thonn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sucrense R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum sulfureum (Velen.) Hayek | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum suluense Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum sumbawanum Warb. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum surrubriflorum W.D.Stevens | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum szechuanense Tsiang & H.T.Zhang | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum szechuanense var. albescens Tsiang & H.T.Zhang | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum szechuanense var. szechuanense | Synonym |  | TRO |  | 
	
		| Cynanchum tabascense Sessé & Moc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum taihangense Tsiang & H.T.Zhang | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum taiwanianum T.Yamaz. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tamense Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tamifolium Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tamifolium var. major Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tamifolium var. minor Hook. & Arn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tarmense Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tatei (Gleason & Moldenke) R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tateyamense Masumura | Unresolved |  | TRO |  | 
	
		| Cynanchum taxifolium (Decne.) R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tenellum L.f. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tenellum Blanco [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tenellum Riedel ex E.Fourn. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tentorioides L.O. Williams | Unresolved |  | TRO |  | 
	
		| Cynanchum tepuiense Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tetragonum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tetrapterum (Turcz.) R.A.Dyer ex Bullock | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum thailandense P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum thesioides (Freyn) K.Schum. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum thesioides var. australe (Maxim.) Tsiang & P.T.Li | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum thesioides var. thesioides | Synonym |  | TRO |  | 
	
		| Cynanchum thymifolium (Schltr.) Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tiaratum Malme | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tingens Buch.-Ham. ex Hook.f. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tmoleum (Boiss.) K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum toliari Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tomentosum Lam. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tomentosum Royle ex Wight [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum trianae Morillo | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum triangulare M.G.Gilbert, W.D.Stevens & P.T.Li | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum trichophyllum L.O.Williams | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum triflorum Vell. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum trifurcatum Schltr. [Illegitimate] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum trifurcatum (Griseb.) Lillo [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum trilobulatum Lillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum trinitense (N.E.Br.) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum triste Griseb. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum trollii Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum truncatum R.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum tsaratananense Choux | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tsiangii P.T.Li | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tuberculatum (Blume ex Miq.) Boerl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tunicatum (Retz.) Alston | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum tylophoriudeum Schltr. ex H. Lév. | Unresolved |  | TRO |  | 
	
		| Cynanchum tylophoroides (Schltr.) Jiménez | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum tylophoroideum Schltr. ex H. Lév. | Unresolved |  | TRO |  | 
	
		| Cynanchum umbellatum Vell. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum umbrosum (Decne.) K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum umtalense Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum undatum Andrews [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum undulatum Jacq. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum undulatum (Decne.) K.Schum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum unguiculatum Ruiz & Pav. ex Britton | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum unguiculatum Markgr. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum unifarium (Scheele) Woods | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum uniflorum Sessé & Moc. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum urbanianum (Schltr.) Alain | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum urceolatum (E.Fourn.) K.Schum. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum urumoffii (Davidov) Hayek | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum usterion Vell. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum utahense (Engelm.) Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum utriculosum Costantin | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum vagum N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum validum N.E.Br. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum vanlessenii (Lavranos) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum varians R.W.Holm | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum veleziae Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum velutinum Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum ventensis Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum veracruzianum Dugand | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum vernyi (Franch. & Sav.) Matsum. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum verrucosum (Desc.) Liede & Meve | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum versicolor Bunge | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum verticillare Lam. [Unplaced] | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum verticillatum Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum villosum Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum villosum Matsum. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum viminale (L.) L. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum viminale Blanco [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum viminale subsp. mulanjense (Liede & Meve) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum viminale subsp. odontolepis (Balf.f.) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum viminale subsp. stipitaceum (Forssk.) Meve & Liede | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum viminale subsp. suberosum (Meve & Liede) Goyder | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum vincetoxicum (L.) Pers. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum violator R.W.Holm | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum virens (E.Mey.) D.Dietr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum virescens (K. Schum.) K. Schum. | Accepted |  | TRO |  | 
	
		| Cynanchum virginicum Banks ex Schult. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum viride Vell. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum viride (Phil.) Reiche [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum viridiflorum Sims | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum viridiflorum G.Mey. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum viridiflorum Ker Gawl. ex Spreng. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum volubile (Decne.) Hemsl. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum vomitorium Lam. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum vulgare Pers. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum wallichii Wight | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum wangii P.T.Li & W.Kittr. | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum warburgii Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum watsonianum Woodson | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum welwitschii Schltr. & Rendle [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum wigginsii Shinners | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum wilfordii (Maxim.) Hemsl. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum wilfordii (Maxim.) Maxim. ex Hook. f. | Synonym |  | TRO |  | 
	
		| Cynanchum wilfordii var. amamianum Hatus. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum woodsonianum L.O.Williams | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum wrightianum Alain | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum wurdackii Morillo | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum xeroneuron (Schltr.) Morillo | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum yamanakae Ohwi & H.Ohashi | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum yesoense Nakai | Unresolved |  | WCSP (in review) |  | 
	
		| Cynanchum yonakuniense Hatus. | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum yunnanense J.Anthony [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Cynanchum yunnanense H.Lév. | Synonym |  | WCSP |  | 
	
		| Cynanchum zeyheri Schltr. | Accepted |  | WCSP (in review) |  | 
	
		| Cynanchum zollingeri (Miq.) Boerl. | Synonym |  | WCSP (in review) |  |