| Hoya acicularis T.Green & Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya acuminata (Wight) Benth. ex Hook. f. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya acuta Haw. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya aeschynanthoides Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya affinis Hemsl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya africana Decne. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya alagensis Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya alata K.D.Hill | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya alba Kostel. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya albiflora Zipp. ex Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya aldrichii Hemsl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya alexicaca (Jacq.) Moon | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya amboinensis Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya amoena Bakh.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya andalensis Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya angustifolia Traill | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya angustifolia Elmer [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya angustisepala Schltr. ex Elmer | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya angustisepala Schltr. ex C.M. Burton | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya anulata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya apoda S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya archboldiana C.Norman | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ariadna Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya arnottiana Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya attenuata Christoph. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya australis R.Br. ex Traill | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya australis subsp. sana (F.M. Bailey) K.D. Hill | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya australis subsp. tenuipes (K.D. Hill) P.I. Forst. & Liddle | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya baishaensis S.Y. He & P.T. Li | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya balaensis Kidyoo & Thaithong | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya balansae Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bandaensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya barbata (R. Br.) Spreng. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya barracki Horne ex Baker [Invalid] | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bawanglingensis S.Y. He & P.T. Li | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya bella Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya benguetensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya betchei (Schltr.) W.A.Whistler | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bhutanica Grierson & D.G.Long | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bicarinata A.Gray | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bicknellii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bicolor Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya billardieri Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bilobata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya blashernaezii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bonii Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bordenii Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya brevialata Kleijn & Donkelaar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya brittonii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya brooksii Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya browniana Koord. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya brunoniana Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya bulusanensis Elmer [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya buotii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya burmanica Rolfe | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya burtoniae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya buruensis Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cagayanensis Schltr. ex Elmer | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya callistophylla T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya calycina Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya campanulata Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya camphorifolia Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cardiophylla Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya carnosa (L.f.) R.Br. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya carnosa var. carnosa  | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya caudata Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cavaleriei H.Lév. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya celebica Boerl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cembra Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya chinensis (Lour.) Traill | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya chinghungensis (Tsiang & P.T.Li) M.G.Gilbert, P.T.Li & W.D.Stevens | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya chlorantha Rech. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya chloroleuca Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya chunii P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ciliata Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ciliata Elmer ex C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cinnamomifolia Hook. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya citrina Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya clandestina Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya clemensiorum T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya coccinea Lem. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cochinchinensis (Lour.) Schult. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya collina Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya collyrioides Teijsm. & Binn. [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cominsii Hemsl. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya commsii Hemsl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya commutata M.G.Gilbert & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya compacta C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cordata P.T.Li & S.Z.Huang | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya coriacea Blume | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya corona-ariadnes Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya coronaria Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya costantinii P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya crassicaulis Elmer ex Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya crassifolia (J. Jacq.) Haw. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya crassior Hochr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya crassipes Turcz. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cumingiana Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cunninghamii Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya curtisii King & Gamble | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya cystiantha Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dalrympliana F.Muell. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya darwinii Loher | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dasyantha Tsiang | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya davidcummingii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dennisii P.I.Forst. & Liddle | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya densifolia Turcz. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya deykei T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dickasoniana P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dictyoneura K.Schum. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dimorpha F.M.Bailey | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya diptera Seem. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dischorensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya diversifolia Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dodecatheiflora Fosberg | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya dolichosparte Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya edanoi C.M.Burton [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya edeni King ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya eitapensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya el-nidicus Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya elegans Kostel. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya elegans Boerl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya elliptica Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya elmeri Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya endauensis Kiew | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya engleriana Hosseus | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya epedunculata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya erythrina Rintz | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya erythrostemma Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya esculenta Tsiang | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya esquirolii H.Lév. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya eugenioides Schltr. ex Elmer | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya excavata Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya exilis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya fetuana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya filiformis Rech. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya finlaysonii Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya fischeriana Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya flagellata Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya flavescens Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya flavida P.I.Forst. & Liddle | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya flexuosa (R. Br.) Spreng. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya forbesii King & Gamble | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya formosana T. Yamaz. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya fraterna Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya fungii Merr. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya fusca Wall. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya fuscomarginata N.E.Br. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gigantanganensis Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gigas Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gildingii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya glabra Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya globiflora Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya globulifera Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya globulosa Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya golamcoana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gongshanica P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gonoloboides Regel | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gracilipes Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gracilis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya grandiflora (R. Br.) Spreng. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya graveolens Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya greenii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya griffithiana Decne. ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya griffithii Hook.f. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya guppyi Oliv. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya gymnanthera Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hainanensis Merr. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya halconensis Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya halophila Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hasseltii (Blume) Miq. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya hellwigiana Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hellwigii Warb. ex K.Schum. & Lauterb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya heuschkeliana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hirsuta Moon | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya hollrungii Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hookeriana Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya hypolasia Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya iconum Santapau | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya imbricata Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya imperialis Lindl. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya inconspicua Hemsl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya incrassata Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya incurvula Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya inflata (P.I. Forst., Liddle & I.M.Liddle) L. Wanntorp & P.I. Forst. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya intermedia A.C.Sm. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ischnopus Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya javanica Boerl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya juannguoiana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kanyakumariana A.N.Henry & Swamin. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kastbergii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kenejiana Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kentiana C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kerrii Craib | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya keysii F.M.Bailey | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kingdonwardii P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kloppenburgii T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya klossii S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya kuhlii (Blume) Koorders | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya kwangsiensis Tsiang & P.T.Li | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lactea S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lacuna Buch.-Ham. [Invalid] | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lacuna Buch.-Ham. ex Wight | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya lacunosa Blume | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lambii T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lamchytoniae K. Schum. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya lamingtoniae F.M.Bailey | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lanceolaria S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lanceolata Wall. ex D.Don | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lanceolata Lindl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lanceolata subsp. bella (Hook.) D.H. Kent | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya lancilimba Merr. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lancilimba f. tsoi (Merr.) Tsiang | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya lantsangensis Tsiang & P.T. Li | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya lasiantha Korth. ex Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lasiogynostegia P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya latifolia G.Don | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya laurifolia Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya laurifolia Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya laurifoliopsis Hochr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lauterbachii K.Schum. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya leembruggeniana Koord. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya leucantha S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya leucorhoda Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya leytensis Elmer ex C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya liangii Tsiang | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lii C.M.Burton [Illegitimate] | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya limoniaca S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya linavergarae Kloppenb. & Siar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lindaueana Koord. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya linearis Wall. ex D.Don | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lipoensis P.T.Li & Z.R.Xu | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya litoralis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lobbii Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya loheri Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya longifolia Wall. ex Wight | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya longipes Schltr. ex Elmer | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya loyceandrewsiana T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lucyae Kloppenb. & Siar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lutea Kostel. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lutea Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya luzonica Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya lyi H.Lév. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya macgillivrayi F.M.Bailey | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya macrophylla Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya macrophylla Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya madulidii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya magnifica P.I.Forst. & Liddle | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya magniflora P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya maingayi Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya manipurensis Deb | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya marginata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya maxima Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya maxima Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mcgregorii Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya megalantha Turrill | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya megalaster Warb. ex K.Schum. & Lauterb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya megalaster Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mekongensis M.G.Gilbert & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya meliflua Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya membranifolia Costantin | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya memoria Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mengtzeensis Tsiang & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya meredithii T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya merrillii Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya micrantha Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya microphylla Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya microstemma Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya minahassae Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mindanaensis Elmer [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mindorensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya minima Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mitrata Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya monetteae T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya montana Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya motoskei Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mucronulata Warb. ex K.Schum. & Lauterb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya mucronulata Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya multiflora Blume | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya myanmarica P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya myrmecopa Kleijn & Donkelaar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nabawanensis Kloppenb. & Wiberg | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya naumannii Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya neocaledonica Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya neoebudica Guillaumin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya neoguineensis Engl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nervosa Tsiang & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nicholsoniae F.Muell. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nicobarica R.Br. ex Traill | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nummularia Decne. ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nummularioides Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya nyhuusiae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obcordata Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oblanceolata Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oblongacutifolia Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obovata Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obovata var. kerrii (Craib) Costantin | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya obreniformis King | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obscura Elmer ex C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obscurinervia Merr. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya obtusifolia Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya occlusa Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya odetteae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya odorata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya odoratissima Linden ex Regel | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oleoides Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oligantha Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oligotricha K.D.Hill | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oligotricha subsp. tenuipes K.D. Hill | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya onychoides P.I.Forst., Liddle & I.M.Liddle | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya opposita G.Don | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya orbiculata Wall. ex Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oreogena Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oreostemma Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya orientalis P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ottolanderi Koord. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ovalifolia Wight & Arn. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya oxycoccoides S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pachyclada Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pachyphylla K.Schum. & Lauterb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pachypus S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya padangensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya palawanica Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pallida Lindl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pallida Dalzell & A.Gibson | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pallilimba Kleijn & Donkelaar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya panchoi Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pandurata Tsiang | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya paniculata (R. Br.) Spreng. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya papillantha K.Schum. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya papuana (Schltr.) Schltr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya parasitica (Roxb.) Wall. ex Wight | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya parviflora Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya parvifolia Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya patella Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pauciflora Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya paxtonii G.Nicholson | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya paziae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pedunculata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya peekelii Markgr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pendula Wight & Arn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pendula Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pentaphlebia Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya perakensis Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya persicinicoronaria S.Y. He & P.T. Li | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya philippinensis P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya phyllura O.Schwartz | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya picta (Blume) Miq. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya piestolepis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pilosa Seem. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pimenteliana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya planiflora Wall. ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya plicata King & Gamble | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya polyneura Hook.f. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya polystachya Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya poolei C.T.White & W.D.Francis | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pottsii Traill | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pottsii var. angustifolia (J. Traill) Tsiang & P.T. Li | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya praetorii Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pruinosa (Blume) Miq. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya pseudolanceolata Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pseudolittoralis C.Norman | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pseudomaxima Koord. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pseudovalifolia Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pubens Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pubera Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pubescens Reinecke | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pubicalyx Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pubifera Elmer [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pulchella Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pulgarensis Elmer [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya purpurascens Teijsm. & Binn. [Invalid] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya purpurea Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya purpureofusca Hook. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pusilla Rintz | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pusilliflora S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya pycnophylla Rech. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya querinoensis Kloppenb. & Siar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya quinquenervia Warb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya quisumbingii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya radicalis Tsiang & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ramosii Kloppenb. & Siar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya recurvifolia Zipp. ex Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya recurvula Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya reticulata Moon | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya reticulata Costantin | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya reticulata Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya reticulata Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya retusa Warb. [Illegitimate] | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya revolubilis Tsiang & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya revoluta Wight ex Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya revoluta Wight ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rhodostele Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rhodostemma Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya ridleyi King & Gamble | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rigida Kerr | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rizaliana Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rosea K.Schum. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rotundifolia Siebold | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rotundisepala Elmer | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Hoya rubida Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rufolanata Ridl. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rumphii Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya rupicola K.D. Hill | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya rupicola (K.D. Hill) P.I. Forst. & Liddle | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya ruscifolia Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya salweenica Tsiang & P T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya samoensis Seem. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sana F.M. Bailey | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya sarcophylla Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya schallertiae C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya schlechteriana S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya schneei Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya scortechinii King & Gamble | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya serpens Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya shepherdii Short ex Hook. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya siamica Craib | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya siariae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sigillatis T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya silvatica Tsiang & P.T.Li | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sipitangensis Kloppenb. & Wiberg | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sogerensis S.Moore | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya solaniflora Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sororia K.Schum. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya spartioides (Benth.) Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya speciosa Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya stenophylla Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya stoneana Kloppenb. & Siar | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya suaveolens Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya subcalva Burkill | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya subglabra Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya subquaterna Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya subquintuplinervis Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya sussuela Merr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya telosmoides Omlor | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tenggerensis Bakh.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya teretifolia Griff. ex Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya teysmanniana Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya thailandica Thaithong | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya thomsonii Hook.f. | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tjadasmalangensis Bakh.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tjampeaensis Hochr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tomataensis T.Green & Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya torricellensis Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya treubiana Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya trigonolobos Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya trinervia Regel | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya trinervis Traill | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya trukensis Hosok. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tsangii C.M.Burton | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tsiangiana P.T.Li | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya tsoii Merr. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya × tuafanua Whistler & Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya uncinata Teijsm. & Binn. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya upoluensis Reinecke | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vacciniiflora O.Schwartz | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vaccinioides Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vanuatensis T.Green | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya variegata Siebold ex Morr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya variifolia Ridl. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya velutina Wight | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya velutina Griff. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya venusta Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya verticillata (Vahl) G. Don | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya villosa Costantin | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya viracensis Kloppenb. & Siar | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya viridiflora R.Br. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya viridiflora Griff. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vitellina Blume | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vitellinoides Bakh.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya vitiensis Turrill | 
		Accepted | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya volubilis Griff. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wallichiana Decne. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wallichii (Wight) C.M. Burton | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Hoya walliniana Kloppenb. & Nyhuus | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wariana Schltr. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wayetii Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya waymaniae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya weebella Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya whistleri Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wibergiae Kloppenb. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wightiana Thwaites | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wightii Hook.f. | 
		Unresolved | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya wrayi King & Gamble | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Hoya yuennanensis Hand.-Mazz. | 
		Synonym | 
		  | 
		WCSP (in review) | 
	
	
		| Hoya zollingeriana Miq. | 
		Unresolved | 
		  | 
		WCSP (in review) |