The Plant List — A working list for all plant species

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837 plant name records match your search criteria Asclepias. The results are below.

The names found have these generic epithets:

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See "Status", "Confidence level", "Source" for definitions.

Name Status Confi­dence level Source Date supplied
Asclepias abyssinica (Decne.) N.E.Br. Synonym M WCSP (in review)
Asclepias acanthocarpus J.F.Gmel. ex Decne. Synonym L WCSP (in review)
Asclepias acerateoides (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias aceratoides M.A.Curtis Unresolved L WCSP (in review)
Asclepias acida Roxb. Unresolved L WCSP (in review)
Asclepias acornuta Kellogg [Unplaced] Unresolved L WCSP (in review)
Asclepias acuminata Pursh Synonym M WCSP (in review)
Asclepias acuminata Willd. ex Schult. Synonym L WCSP (in review)
Asclepias acuminata (Wall.) Roxb. [Illegitimate] Synonym M WCSP (in review)
Asclepias adscendens (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias × aequicornu E.Fourn. Accepted M WCSP (in review)
Asclepias affinis (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias affinis De Wild. [Illegitimate] Synonym M WCSP (in review)
Asclepias ageratoides M.A.Curtis Accepted M WCSP (in review)
Asclepias alatas Schltr. Unresolved L TRO
Asclepias alba Mill. Synonym M WCSP (in review)
Asclepias alba Cav. [Illegitimate] Unresolved L WCSP (in review)
Asclepias albens (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias albicans S.Watson Accepted M WCSP (in review)
Asclepias albida N.E.Br. Synonym M WCSP (in review)
Asclepias albiflora Raf. Synonym M WCSP (in review)
Asclepias alboaurantiaca Jacq. Synonym M WCSP (in review)
Asclepias alexicaca Jacq. Synonym L WCSP (in review)
Asclepias alexifarmacas Rojas Acosta [Unplaced] Unresolved L WCSP (in review)
Asclepias alexitoxica St.-Lag. Synonym M WCSP (in review)
Asclepias alpestris (K.Schum.) Goyder Accepted M WCSP (in review)
Asclepias alpina Vell. Synonym M WCSP (in review)
Asclepias alticola E.Fourn. Synonym M WCSP (in review)
Asclepias altissima Jacq. Synonym L WCSP (in review)
Asclepias amabilis N.E.Br. Accepted M WCSP (in review)
Asclepias ameliae S.Moore Accepted M WCSP (in review)
Asclepias amoena L. Synonym M WCSP (in review)
Asclepias amoena Brongn. [Illegitimate] Synonym M WCSP (in review)
Asclepias amplexicaulis Sm. Accepted M WCSP (in review)
Asclepias amsonioides Standl. Synonym M WCSP (in review)
Asclepias angadensis S.Moore [Unplaced] Unresolved L WCSP (in review)
Asclepias angulosa Regel [Unplaced] Unresolved L WCSP (in review)
Asclepias angustata (K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias angustifolia Schweigg. Synonym M WCSP (in review)
Asclepias angustifolia Elliott Synonym M WCSP (in review)
Asclepias angustifolia Schult. Synonym M WCSP (in review)
Asclepias angustifolia Sessé & Moc. [Unplaced] Unresolved L WCSP (in review)
Asclepias angustissima Andersson Unresolved L WCSP (in review)
Asclepias anisophylla Conrath & Schltr. Unresolved L WCSP (in review)
Asclepias annularia Roxb. Unresolved L WCSP (in review)
Asclepias annularis Roxb. Synonym M TRO
Asclepias aphylla Forssk. Unresolved L WCSP (in review)
Asclepias aphylla Thunb. Unresolved L WCSP (in review)
Asclepias aphylla Roxb. ex Wight Synonym L WCSP (in review)
Asclepias aphylla Bojer ex Decne. Synonym M WCSP (in review)
Asclepias apocinum Gaterau Synonym M WCSP (in review)
Asclepias apocynifolia Woodson Accepted M WCSP (in review)
Asclepias appendiculata (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias arborea Salisb. [Illegitimate] Synonym M WCSP (in review)
Asclepias arborescens L. Synonym M WCSP (in review)
Asclepias arenaria Torr. Accepted M WCSP (in review)
Asclepias arenicola Nash Unresolved L WCSP (in review)
Asclepias argentata Noronha [Unplaced] Unresolved L WCSP (in review)
Asclepias armata Spreng. Synonym M WCSP (in review)
Asclepias arvensis Vell. Unresolved L WCSP (in review)
Asclepias asperula (Decne.) Woodson Accepted M WCSP (in review)
Asclepias asperula var. asperula Synonym L TRO
Asclepias asperula subsp. asperula Synonym L TRO
Asclepias asperula subsp. capricornu (Woodson) Woodson Accepted L WCSP (in review)
Asclepias asperula var. decumbens (Nutt.) Shinners Synonym L WCSP (in review)
Asclepias asthmatica L.f. Unresolved L WCSP (in review)
Asclepias atroviolacea Woodson Accepted M WCSP (in review)
Asclepias aurantiaca Salisb. [Illegitimate] Synonym M WCSP (in review)
Asclepias aurea (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias aurea var. brevicuspis S.Moore Synonym L WCSP (in review)
Asclepias aurea var. vittata N.E.Br. Synonym L WCSP (in review)
Asclepias auriculata Kunth Accepted M WCSP (in review)
Asclepias auriculata (Engelm. ex Torr.) Holz. [Illegitimate] Synonym M WCSP (in review)
Asclepias axillaris Vell. Unresolved L WCSP (in review)
Asclepias bagshawei S.Moore Synonym L WCSP (in review)
Asclepias barbata Linnaeus ex Jackson Unresolved L TRO
Asclepias barjoniifolia E.Fourn. Accepted M WCSP (in review)
Asclepias bartlettiana Woodson Accepted M WCSP (in review)
Asclepias baumii Schltr. Accepted M WCSP (in review)
Asclepias bicknellii Vail Synonym M WCSP (in review)
Asclepias bicolor Moench [Illegitimate] Synonym M WCSP (in review)
Asclepias bicuspis N.E.Br. Accepted M WCSP (in review)
Asclepias bidentata Hemsl. Synonym M WCSP (in review)
Asclepias bifida W.H.Blackw. Accepted M WCSP (in review)
Asclepias × blanchetii E.Fourn. Synonym M WCSP (in review)
Asclepias boliviensis E.Fourn. Accepted M WCSP (in review)
Asclepias brachystephana Engelm. ex Torr. Accepted M WCSP (in review)
Asclepias bracteolata E.Fourn. Accepted M WCSP (in review)
Asclepias brasiliensis (E.Fourn.) Schltr. Synonym M WCSP (in review)
Asclepias breviantherae Goyder Accepted M WCSP (in review)
Asclepias brevicornu Scheele Synonym M WCSP (in review)
Asclepias brevicuspis (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias brevipes (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias × bridgesii E.Fourn. Accepted M WCSP (in review)
Asclepias browniana S.Moore Synonym M WCSP (in review)
Asclepias buchenaviana Schinz Synonym M WCSP (in review)
Asclepias buchwaldii (Schltr. & K.Schum.) De Wild. Accepted M WCSP (in review)
Asclepias buchwaldii var. angustifolia De Wild. Synonym L WCSP (in review)
Asclepias burchellii Schltr. Accepted M WCSP (in review)
Asclepias cabrae De Wild. Synonym M WCSP (in review)
Asclepias calceolus S.Moore Synonym M WCSP (in review)
Asclepias californica Greene Accepted M WCSP (in review)
Asclepias californica subsp. californica Synonym L TRO
Asclepias campestris Vell. Unresolved L WCSP (in review)
Asclepias campestris Decne. [Illegitimate] Synonym M WCSP (in review)
Asclepias campestris var. angustifolia Kuntze Synonym L WCSP (in review)
Asclepias campestris var. flava Kuntze Synonym L WCSP (in review)
Asclepias campestris var. heterophylla Kuntze Synonym L WCSP (in review)
Asclepias campestris f. rosea Stuck. ex Seckt Synonym L WCSP (in review)
Asclepias campestris var. schlechteri Kuntze Synonym L WCSP (in review)
Asclepias cancellata Burm.f. Synonym M WCSP (in review)
Asclepias candida Vell. Accepted M WCSP (in review)
Asclepias canescens Willd. Synonym M WCSP (in review)
Asclepias canina Noronha [Unplaced] Unresolved L WCSP (in review)
Asclepias capitellata Raf. Synonym M TRO
Asclepias capricornu Woodson Synonym M WCSP (in review)
Asclepias capricornu subsp. occidentalis Woodson Synonym L WCSP (in review)
Asclepias carnosa L.f. Synonym M WCSP (in review)
Asclepias carnosa Blanco [Illegitimate] Synonym M WCSP (in review)
Asclepias carsonii (N.E.Br.) Schltr. Synonym M WCSP (in review)
Asclepias chapalensis Brandegee Accepted M WCSP (in review)
Asclepias chloroglossa Schltr. Unresolved L WCSP (in review)
Asclepias ciliata Murray ex Decne. Synonym M WCSP (in review)
Asclepias cinerea Walter Accepted M WCSP (in review)
Asclepias circinalis (Decne.) Woodson Accepted M WCSP (in review)
Asclepias cirrosa Ehrenb. ex Schweinf. [Unplaced] Unresolved L WCSP (in review)
Asclepias citrifolia Jacq. Synonym M WCSP (in review)
Asclepias citrifolia Hook. & Arn. Synonym L WCSP (in review)
Asclepias citrifolia var. angustifolia Hook. & Arn. Synonym L WCSP (in review)
Asclepias clausa Jacq. Synonym L WCSP (in review)
Asclepias clusiifolia Horsf. ex Schult. [Unplaced] Unresolved L WCSP (in review)
Asclepias coarctata S.Moore Synonym M WCSP (in review)
Asclepias coccinea N.E.Br. Unresolved L WCSP (in review)
Asclepias cochabambensis Rusby Synonym M WCSP (in review)
Asclepias cognata N.E.Br. Synonym M WCSP (in review)
Asclepias communis Vell. Synonym M WCSP (in review)
Asclepias compressa Moench Synonym M WCSP (in review)
Asclepias compressidens (N.E.Br.) Nicholas Accepted M WCSP (in review)
Asclepias concinna (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias concolor (Decne.) Schltr. Unresolved L WCSP (in review)
Asclepias confusa (Scott-Elliot) Schltr. Unresolved L WCSP (in review)
Asclepias congolensis De Wild. Synonym L WCSP (in review)
Asclepias connivens Baldwin ex Elliot Accepted M WCSP (in review)
Asclepias consanguinea Kunze [Unplaced] Unresolved L WCSP (in review)
Asclepias conspicua N.E.Br. Synonym M WCSP (in review)
Asclepias constricta M.E.Jones Accepted M WCSP (in review)
Asclepias contorta Forssk. Unresolved L WCSP (in review)
Asclepias contrayerba Sessé & Moc. Accepted M WCSP (in review)
Asclepias convolvulacea Willd. Synonym L WCSP (in review)
Asclepias convolvulacea B.Heyne ex Decne. Unresolved L WCSP (in review)
Asclepias conzattii Woodson Accepted M WCSP (in review)
Asclepias cooperi N.E.Br. Accepted M WCSP (in review)
Asclepias cordata Burm.f. Unresolved L WCSP (in review)
Asclepias cordata Forssk. Synonym M WCSP (in review)
Asclepias cordata Walter Synonym M WCSP (in review)
Asclepias cordata Vell. [Illegitimate] Synonym L WCSP (in review)
Asclepias cordata Sessé & Moc. [Unplaced] Unresolved L WCSP (in review)
Asclepias cordifolia (Benth.) Jeps. Accepted M WCSP (in review)
Asclepias cornuta (Decne.) Cordem. Synonym M WCSP (in review)
Asclepias cornuti Decne. Synonym M WCSP (in review)
Asclepias coulteri A.Gray Accepted M WCSP (in review)
Asclepias crassicoronata Goyder Accepted M WCSP (in review)
Asclepias crassifolia L. ex Decne. Synonym M WCSP (in review)
Asclepias crassinervis N.E.Br. Accepted M WCSP (in review)
Asclepias crinita (G.Bertol.) N.E.Br. Synonym M WCSP (in review)
Asclepias crispa P.J.Bergius Accepted M WCSP (in review)
Asclepias cristata S.Moore Synonym M WCSP (in review)
Asclepias crocea Woodson Accepted M WCSP (in review)
Asclepias cryptoceras S.Watson Accepted M WCSP (in review)
Asclepias cryptoceras var. cryptoceras Synonym L TRO
Asclepias cryptoceras var. davisii (Woodson) W.H.Baker Synonym L WCSP (in review)
Asclepias cryptoceras subsp. davisii (Woodson) Woodson Accepted L WCSP (in review)
Asclepias cubensis Wender. Synonym M WCSP (in review)
Asclepias cucullata (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias cucullata subsp. scabrifolia (S.Moore) Goyder Accepted L WCSP (in review)
Asclepias cucullata var. scabrifolia (S. Moore) Goyder Synonym L TRO
Asclepias cultriformis Harv. ex Schltr. Accepted M WCSP (in review)
Asclepias cuneifolia Raf. Unresolved L WCSP (in review)
Asclepias curassavica L. Accepted M WCSP (in review)
Asclepias curassavica Griseb. [Illegitimate] Synonym L WCSP (in review)
Asclepias curassavica var. concolor Krug & Urb. Synonym L WCSP (in review)
Asclepias curassavica f. flaviflora Tawada Synonym L WCSP (in review)
Asclepias curassavica f. pallidiflora Griseb. Synonym L WCSP (in review)
Asclepias curassavica x nivea Urb. Unresolved L TRO
Asclepias curtissii A.Gray Accepted L WCSP (in review)
Asclepias curupi E.Fourn. Synonym M WCSP (in review)
Asclepias curvipes A.Nelson [Unplaced] Unresolved L WCSP (in review)
Asclepias cutea Raf. Unresolved L TRO
Asclepias cutleri Woodson Accepted M WCSP (in review)
Asclepias cynanchoides Humb. & Bonpl. ex Schult. Synonym M WCSP (in review)
Asclepias daemia Forssk. Synonym L WCSP (in review)
Asclepias daemia Blanco [Illegitimate] Synonym L WCSP (in review)
Asclepias dasypus Raf. Synonym M WCSP (in review)
Asclepias davisii Woodson Synonym M WCSP (in review)
Asclepias davurica Willd. Synonym M WCSP (in review)
Asclepias dealbata (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias debilis Michx. [Unplaced] Unresolved L WCSP (in review)
Asclepias decipiens N.E.Br. Synonym M WCSP (in review)
Asclepias decumbens L. Synonym M WCSP (in review)
Asclepias decumbens (Nutt.) K.Schum. [Illegitimate] Synonym M WCSP (in review)
Asclepias demissa Greene [Unplaced] Unresolved L WCSP (in review)
Asclepias densa Jacq. Unresolved L TRO
Asclepias densiflora N.E.Br. Accepted M WCSP (in review)
Asclepias denticulata Schltr. Synonym M WCSP (in review)
Asclepias dependens (K.Schum.) N.E.Br. Accepted M WCSP (in review)
Asclepias depressa (Schltr.) Schltr. Synonym L WCSP (in review)
Asclepias deregeana var. calceolus (S.Moore) N.E.Br. Synonym L WCSP (in review)
Asclepias deregeana var. sordida N.E.Br. Synonym L WCSP (in review)
Asclepias dewevrei De Wild. Synonym L WCSP (in review)
Asclepias dichotoma Rottler [Invalid] Unresolved L WCSP (in review)
Asclepias dilatata Linnaeus ex Jackson Unresolved L TRO
Asclepias dinteri Engl. & Krause Accepted M WCSP (in review)
Asclepias dioscoridis Fraas [Unplaced] Unresolved L WCSP (in review)
Asclepias diploglossa (Turcz.) Druce Synonym M WCSP (in review)
Asclepias disparilis N.E.Br. Accepted M WCSP (in review)
Asclepias dissoluta (K.Schum.) Schltr. Synonym L WCSP (in review)
Asclepias dissona N.E.Br. Accepted M WCSP (in review)
Asclepias douglasii Hook. Synonym M WCSP (in review)
Asclepias dregeana Schltr. Synonym M WCSP (in review)
Asclepias eastwoodiana Barneby Synonym M WCSP (in review)
Asclepias echinata Roxb. [Illegitimate] Synonym L WCSP (in review)
Asclepias echinata Decne. Synonym L WCSP (in review)
Asclepias echinata Hook.f. Synonym M WCSP (in review)
Asclepias ecornuta Kellogg ex A.Gray [Invalid] Synonym M WCSP (in review)
Asclepias edentata Goyder Accepted M WCSP (in review)
Asclepias elata Benth. Synonym M WCSP (in review)
Asclepias elegans Vell. [Unplaced] Unresolved L WCSP (in review)
Asclepias elegantula Fishbein Accepted M WCSP (in review)
Asclepias elliptica Raf. Synonym M WCSP (in review)
Asclepias eminens (Harv.) Schltr. Accepted M WCSP (in review)
Asclepias emoryi (Greene) Vail ex Small Accepted M WCSP (in review)
Asclepias endotrachys Schltr. Synonym M WCSP (in review)
Asclepias engelmanniana Woodson Accepted M WCSP (in review)
Asclepias engelmanniana var. rusbyi (Vail) Kearney Synonym L WCSP (in review)
Asclepias erecta De Wild. Synonym M WCSP (in review)
Asclepias eriocarpa Benth. Accepted M WCSP (in review)
Asclepias eriocarpa Torr. [Illegitimate] Synonym M WCSP (in review)
Asclepias eriocarpa var. microcarpa Munz & I.M.Johnst. Synonym L WCSP (in review)
Asclepias erosa Torr. Accepted M WCSP (in review)
Asclepias erosa var. obtusa (A.Gray) A.Gray Synonym L WCSP (in review)
Asclepias euphorbiifolia Engelm. ex A.Gray Accepted M WCSP (in review)
Asclepias euphorbioides A.Chev. Synonym M WCSP (in review)
Asclepias eustegioides (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias exaltata L. Accepted M WCSP (in review)
Asclepias exilis M.E.Jones Accepted M WCSP (in review)
Asclepias eximia Schltr. Synonym M WCSP (in review)
Asclepias expansa (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias extenta S.Moore Synonym L WCSP (in review)
Asclepias fallax (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias fascicularis Decne. Accepted M WCSP (in review)
Asclepias fasciculata Hemsl. [Spelling variant] Synonym M WCSP (in review)
Asclepias feayi Chapm. ex A.Gray Accepted M WCSP (in review)
Asclepias ferruginea Humb. & Bonpl. ex Schult. [Unplaced] Unresolved L WCSP (in review)
Asclepias fiebrigii Schltr. Synonym M WCSP (in review)
Asclepias filiformis Jacq. Synonym L WCSP (in review)
Asclepias filiformis L.f. Unresolved L WCSP (in review)
Asclepias filiformis (E.Mey.) Kuntze Synonym M WCSP (in review)
Asclepias fimbriata Weim. Accepted M WCSP (in review)
Asclepias firma (N.E.Br.) Schltr. ex Hiern Synonym M WCSP (in review)
Asclepias flagellaris Bolus ex Schltr. Synonym M WCSP (in review)
Asclepias flanaganii Schltr. Accepted M WCSP (in review)
Asclepias flava N.E.Br. Synonym M WCSP (in review)
Asclepias flava Lillo [Illegitimate] Synonym M WCSP (in review)
Asclepias flavida N.E.Br. Synonym M WCSP (in review)
Asclepias flexuosa (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias floridana Lam. Unresolved L WCSP (in review)
Asclepias fluviatilis A.Chev. Synonym M WCSP (in review)
Asclepias foetida Cav. Synonym M WCSP (in review)
Asclepias foliosa (K.Schum.) Hiern Accepted M WCSP (in review)
Asclepias fornicata N.E.Br. Synonym M WCSP (in review)
Asclepias forskalii Roem. & Schult. Unresolved L TRO
Asclepias forskohei Schult. Unresolved L TRO
Asclepias forsskalii Schult. [Illegitimate] Synonym M WCSP (in review)
Asclepias fournieri Woodson Accepted M WCSP (in review)
Asclepias fragrans Raf. [Illegitimate] Synonym M WCSP (in review)
Asclepias fragrans (Benth.) Decne. [Illegitimate] Synonym M WCSP (in review)
Asclepias frederici Hiern Synonym M WCSP (in review)
Asclepias fremontii Torr. Synonym M WCSP (in review)
Asclepias friesii Schltr. Unresolved L WCSP (in review)
Asclepias fruticosa L. Synonym M WCSP (in review)
Asclepias fulva N.E.Br. Accepted M WCSP (in review)
Asclepias fusca Lour. Unresolved L WCSP (in review)
Asclepias fuscata Willd. [Invalid] Unresolved L WCSP (in review)
Asclepias fuscata Hornem. Synonym L WCSP (in review)
Asclepias galeottii E.Fourn. Accepted M WCSP (in review)
Asclepias galioides Kunth Synonym M WCSP (in review)
Asclepias galpinii (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias geminata Roxb. Synonym L WCSP (in review)
Asclepias geminiflora (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias gentryi Standl. Accepted M WCSP (in review)
Asclepias gerrardii (Harv.) Schltr. Unresolved L WCSP (in review)
Asclepias gibba (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias gibba var. gibba Synonym L TRO
Asclepias giffordii Eastw. Synonym M WCSP (in review)
Asclepias gigantea L. Synonym M WCSP (in review)
Asclepias gigantea Willd. [Illegitimate] Synonym L WCSP (in review)
Asclepias gigantiflora (K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias glaberrima Sessé & Moc. Synonym M WCSP (in review)
Asclepias glabra Mill. Synonym M WCSP (in review)
Asclepias glabra Forssk. Unresolved L WCSP (in review)
Asclepias gladewitzii Farw. [Unplaced] Unresolved L WCSP (in review)
Asclepias glaucescens Kunth Accepted M WCSP (in review)
Asclepias glaucescens var. elata (Benth.) E.Fourn. Synonym L WCSP (in review)
Asclepias glaucophylla (Schltr.) Schltr. Synonym M WCSP (in review)
Asclepias globosa Stokes Synonym M WCSP (in review)
Asclepias gomphocarpoides (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias gonalis Raf. Synonym M WCSP (in review)
Asclepias gonocarpos (Walter) J.F.Gmel. Synonym M WCSP (in review)
Asclepias gordon-grayae Nicholas Accepted M WCSP (in review)
Asclepias gossweileri S.Moore Synonym M WCSP (in review)
Asclepias graminea Lam. [Unplaced] Unresolved L WCSP (in review)
Asclepias graminifolia (Wild) Goyder Accepted M WCSP (in review)
Asclepias grandiflora L.f. Unresolved L WCSP (in review)
Asclepias grandiflora E.Fourn. [Illegitimate] Synonym M WCSP (in review)
Asclepias grandifolia Bertol. Synonym M WCSP (in review)
Asclepias grandirandii Goyder Accepted M WCSP (in review)
Asclepias grantii (Oliv.) Schltr. Unresolved L WCSP (in review)
Asclepias grayi L.D.Benson Synonym M WCSP (in review)
Asclepias greeniana Nutt. ex W.Baxter & Wooster [Unplaced] Unresolved L WCSP (in review)
Asclepias guatemalensis Donn.Sm. Synonym M WCSP (in review)
Asclepias hallii A.Gray Accepted M WCSP (in review)
Asclepias harveyana Schltr. Unresolved L WCSP (in review)
Asclepias hassleriana Malme Synonym M WCSP (in review)
Asclepias hastata Bunge Synonym M WCSP (in review)
Asclepias hastata (E.Mey.) Schltr. [Illegitimate] Synonym M WCSP (in review)
Asclepias herbacea Roxb. Synonym L WCSP (in review)
Asclepias hirtella (Pennell) Woodson Synonym M WCSP (in review)
Asclepias hispida Vell. Synonym M WCSP (in review)
Asclepias humilis (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias humistrata Walter Accepted M WCSP (in review)
Asclepias humistriata J.J.A. Van der Walt Unresolved L TRO
Asclepias hybrida Michx. Synonym M WCSP (in review)
Asclepias hypoleuca (A.Gray) Woodson Accepted M WCSP (in review)
Asclepias illinoensis Michx. ex Steud. Synonym M WCSP (in review)
Asclepias inaequalis Goyder Accepted M WCSP (in review)
Asclepias incarnata L. Accepted M WCSP (in review)
Asclepias incarnata Walter [Illegitimate] Unresolved L WCSP (in review)
Asclepias incarnata f. albiflora (Raf.) A.Heller Synonym L WCSP (in review)
Asclepias incarnata f. candida Fernald Synonym L WCSP (in review)
Asclepias incarnata var. glabra Eaton & Wright Synonym L WCSP (in review)
Asclepias incarnata subsp. incarnata Synonym L TRO
Asclepias incarnata var. incarnata Synonym L TRO
Asclepias incarnata f. incarnata Synonym L TRO
Asclepias incarnata var. longifolia A.Gray Synonym L WCSP (in review)
Asclepias incarnata var. neoscotica Fernald Synonym L WCSP (in review)
Asclepias incarnata var. pulchra (Ehrh. ex Willd.) Pers. Synonym L WCSP (in review)
Asclepias incarnata f. pulchra (Ehrh. ex Willd.) Voss Synonym L WCSP (in review)
Asclepias incarnata subsp. pulchra (Ehrh. ex Willd.) Woodson Accepted L WCSP (in review)
Asclepias incarnata f. rosea B.Boivin Synonym L WCSP (in review)
Asclepias inflexa S.Moore [Unplaced] Unresolved L WCSP (in review)
Asclepias insignis (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias insignis (Brandegee) Woodson [Illegitimate] Synonym M WCSP (in review)
Asclepias integra N.E.Br. Synonym M WCSP (in review)
Asclepias intermedia Vail Synonym M WCSP (in review)
Asclepias involucrata Engelm. ex Torr. Accepted M WCSP (in review)
Asclepias involucrata var. tomentosa Eastw. Synonym L WCSP (in review)
Asclepias ivesii (Britton) Wooton & Standl. Synonym M TRO
Asclepias jacquiniana Spreng. Synonym L WCSP (in review)
Asclepias jaliscana B.L.Rob. Synonym M WCSP (in review)
Asclepias jaliscana M.E.Jones [Illegitimate] Synonym M WCSP (in review)
Asclepias jamesii Torr. Accepted M WCSP (in review)
Asclepias jangadensis S.Moore Synonym M WCSP (in review)
Asclepias javanica Burm. ex Decne. Unresolved L WCSP (in review)
Asclepias jorgeana Fishbein & S.P.Lynch Accepted M WCSP (in review)
Asclepias kaessneri N.E.Br. Synonym M WCSP (in review)
Asclepias kamerunensis Schltr. Accepted M WCSP (in review)
Asclepias kansana Vail Synonym M WCSP (in review)
Asclepias katangensis De Wild. Synonym L WCSP (in review)
Asclepias katangensis S.Moore [Illegitimate] Unresolved L WCSP (in review)
Asclepias klaprothiana Schult. [Unplaced] Unresolved L WCSP (in review)
Asclepias kotolo Eastw. [Unplaced] Unresolved L WCSP (in review)
Asclepias kuntzei Schltr. Synonym M WCSP (in review)
Asclepias labriformis M.E.Jones Accepted M WCSP (in review)
Asclepias lactifera L. Synonym M WCSP (in review)
Asclepias lanata (E.Mey.) Druce Synonym M WCSP (in review)
Asclepias lanceolata Walter Accepted M WCSP (in review)
Asclepias lanceolata Ives [Illegitimate] Synonym M WCSP (in review)
Asclepias lanceolata f. flaviflora Fernald Synonym L WCSP (in review)
Asclepias lanceolata var. lanceolata Synonym L TRO
Asclepias lanceolata f. lanceolata Synonym L TRO
Asclepias lanceolata var. paupercula (Michx.) Fernald Synonym L WCSP (in review)
Asclepias lancifolia Steud. Synonym M WCSP (in review)
Asclepias lancifolia Raf. Synonym M WCSP (in review)
Asclepias langsdorffii E.Fourn. Accepted M WCSP (in review)
Asclepias laniflora Forssk. Synonym M WCSP (in review)
Asclepias lanuginosa Nutt. Accepted M WCSP (in review)
Asclepias lanuginosa Kunth [Illegitimate] Synonym M WCSP (in review)
Asclepias lasiotis Raf. Synonym M WCSP (in review)
Asclepias latifolia (Torr.) Raf. Accepted M WCSP (in review)
Asclepias latifolia Britton [Illegitimate] Synonym M WCSP (in review)
Asclepias laurentiana (Dewèvre) N.E.Br. Synonym M WCSP (in review)
Asclepias laurifolia Michx. Synonym M WCSP (in review)
Asclepias laurifolia Roxb. Synonym M WCSP (in review)
Asclepias laxiflora Perr. ex Colla [Unplaced] Unresolved L WCSP (in review)
Asclepias laxiflora (Benth.) Decne. [Illegitimate] Unresolved L WCSP (in review)
Asclepias ledofolia Torr. Unresolved L TRO
Asclepias lemmonii A.Gray Accepted M WCSP (in review)
Asclepias lepida S.Moore Synonym M WCSP (in review)
Asclepias leptopus I.M.Johnst. Accepted M WCSP (in review)
Asclepias leucocarpa Schltr. Synonym M WCSP (in review)
Asclepias leucophylla Engelm. Synonym M WCSP (in review)
Asclepias leucophylla var. obtusa A.Gray Synonym L WCSP (in review)
Asclepias leucotricha Schltr. Synonym M WCSP (in review)
Asclepias lilacina Weim. Synonym M WCSP (in review)
Asclepias linaria Cav. Accepted M WCSP (in review)
Asclepias lindheimeri Engelm. & A.Gray Synonym M WCSP (in review)
Asclepias lindleyi Gillies ex Steud. Synonym M WCSP (in review)
Asclepias linearifolia Pav. ex Decne. Unresolved L WCSP (in review)
Asclepias linearis Scheele Accepted M WCSP (in review)
Asclepias lineolata (Decne.) Schltr. Synonym M WCSP (in review)
Asclepias lineolatus S. Moore Unresolved L TRO
Asclepias linifolia Kunth Synonym M WCSP (in review)
Asclepias linifolia Lag. ex Spreng. [Unplaced] Unresolved L WCSP (in review)
Asclepias lisianthoides (Decne.) N.E.Br. Synonym L WCSP (in review)
Asclepias litocarpa Chiov. Synonym M WCSP (in review)
Asclepias lonchophylla Greene [Unplaced] Unresolved L WCSP (in review)
Asclepias longicornis Kellogg [Unplaced] Unresolved L WCSP (in review)
Asclepias longicornu Benth. Synonym M WCSP (in review)
Asclepias longiflora Jacq. Unresolved L WCSP (in review)
Asclepias longifolia Michx. Accepted M WCSP (in review)
Asclepias longifolia subsp. hirtella (Pennell) J.Farmer & C.R.Bell Accepted L WCSP (in review)
Asclepias longifolia var. hirtella (Pennell) B.L.Turner Synonym L WCSP (in review)
Asclepias longipedunculata Brandegee Accepted M WCSP (in review)
Asclepias longipetala Scheele Synonym M WCSP (in review)
Asclepias longirostra Goyder Accepted M WCSP (in review)
Asclepias longissima (K.Schum.) N.E.Br. Accepted M WCSP (in review)
Asclepias longistigma Roxb. Synonym L WCSP (in review)
Asclepias lutea Mill. Unresolved L WCSP (in review)
Asclepias lutea Raf. [Illegitimate] Synonym M WCSP (in review)
Asclepias lynchiana Fishbein Accepted M WCSP (in review)
Asclepias mackenii (Harv.) Schltr. Unresolved L WCSP (in review)
Asclepias macra Schltr. Unresolved L WCSP (in review)
Asclepias macrantha Hochst. ex Oliv. Unresolved L WCSP (in review)
Asclepias macrochila Schltr. Unresolved L WCSP (in review)
Asclepias macropetala (Schltr. & K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias macrophylla Humb. & Bonpl. ex Schult. Synonym M WCSP (in review)
Asclepias macrophylla Nutt. [Illegitimate] Synonym M WCSP (in review)
Asclepias macrophylla var. comosa Durand & Hilg. Synonym L WCSP (in review)
Asclepias macropus (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias macrosperma Eastw. ex Vail Synonym M WCSP (in review)
Asclepias macrotis Torr. Accepted M WCSP (in review)
Asclepias macroura A.Gray Accepted M WCSP (in review)
Asclepias macvaughii Woodson Accepted M WCSP (in review)
Asclepias margaritacea Hoffmanns. ex Schult. Synonym M WCSP (in review)
Asclepias marginata Decne. Synonym M WCSP (in review)
Asclepias marginata var. bodenbenderi Kuntze Synonym L WCSP (in review)
Asclepias maritima Jacq. Synonym M WCSP (in review)
Asclepias maritima Pall. [Unplaced] Unresolved L WCSP (in review)
Asclepias maritima Raf. Synonym M WCSP (in review)
Asclepias maritima Raf. ex Decne. Synonym M WCSP (in review)
Asclepias mashonensis Schltr. Synonym M WCSP (in review)
Asclepias masonii Woodson Accepted M WCSP (in review)
Asclepias mazatlanensis Sessé & Moc. Accepted M WCSP (in review)
Asclepias meadii Torr. ex A.Gray Accepted M WCSP (in review)
Asclepias media Steud. Unresolved L WCSP (in review)
Asclepias megalotis Raf. Synonym M WCSP (in review)
Asclepias melantha Decne. Accepted M WCSP (in review)
Asclepias meliodora (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias meliodora var. brevicoronata N.E.Br. Synonym L WCSP (in review)
Asclepias meliodora var. meliodora Synonym L TRO
Asclepias mellodora A.St.-Hil. Accepted M WCSP (in review)
Asclepias mellodora var. mellodora Synonym L TRO
Asclepias mellodora var. minor A.St.-Hil. Synonym L WCSP (in review)
Asclepias mexicana Cav. Synonym M WCSP (in review)
Asclepias meyeriana (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias michauxii Decne. Accepted M WCSP (in review)
Asclepias micrantha Roxb. Synonym M WCSP (in review)
Asclepias microphylla Roth ex Schult. Unresolved L WCSP (in review)
Asclepias minor (S.Moore) Goyder Accepted M WCSP (in review)
Asclepias minuta A.Chev. Synonym M WCSP (in review)
Asclepias minutiflora (Goyder) Goyder Accepted M WCSP (in review)
Asclepias mirifica Woodson Accepted M WCSP (in review)
Asclepias modesta N.E.Br. Synonym M WCSP (in review)
Asclepias modesta var. foliosa N.E.Br. Synonym L WCSP (in review)
Asclepias monantha Vell. Unresolved L WCSP (in review)
Asclepias montana Roxb. Synonym M WCSP (in review)
Asclepias montevidensis Spreng. ex E.Fourn. Synonym M WCSP (in review)
Asclepias monticola N.E.Br. Accepted M WCSP (in review)
Asclepias moorei De Wild. Unresolved L WCSP (in review)
Asclepias mtorwiensis Goyder Accepted M WCSP (in review)
Asclepias mucronata Thunb. Synonym L WCSP (in review)
Asclepias muhindensis N.E.Br. Unresolved L WCSP (in review)
Asclepias multicaulis Vell. Unresolved L WCSP (in review)
Asclepias multicaulis (E.Mey.) Schltr. [Illegitimate] Unresolved L WCSP (in review)
Asclepias multiflora (Decne.) N.E.Br. Synonym L WCSP (in review)
Asclepias multinervis E.Fourn. Synonym M WCSP (in review)
Asclepias munonquensis S.Moore Unresolved L WCSP (in review)
Asclepias muricata Schumach. & Thonn. Synonym L WCSP (in review)
Asclepias nana Verd. Accepted M WCSP (in review)
Asclepias navicularis (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias navicularis var. compressidens N.E.Br. Synonym L WCSP (in review)
Asclepias navicularis var. navicularis Synonym L TRO
Asclepias neglecta Hemsl. Accepted M WCSP (in review)
Asclepias negrii Chiov. Synonym M WCSP (in review)
Asclepias nemorensis S.Moore Synonym L WCSP (in review)
Asclepias nervosa Decne. Synonym M WCSP (in review)
Asclepias nigra L. Synonym M WCSP (in review)
Asclepias nitida Vell. Unresolved L WCSP (in review)
Asclepias nivalis J.F.Gmel. Synonym M WCSP (in review)
Asclepias nivea L. Accepted M WCSP (in review)
Asclepias nivea Forssk. [Illegitimate] Synonym M WCSP (in review)
Asclepias nivea Sims Synonym M WCSP (in review)
Asclepias nivea var. curassavica (L.) Kuntze Synonym L WCSP (in review)
Asclepias nivea var. flava Kuntze Synonym L WCSP (in review)
Asclepias nivea var. intermedia Schltr. Synonym L WCSP (in review)
Asclepias nivea var. normalis Kuntze Synonym L WCSP (in review)
Asclepias notha W.D.Stevens Accepted M WCSP (in review)
Asclepias nuda Thonn. & Schumach. Unresolved L WCSP (in review)
Asclepias nummularia Torr. Accepted M WCSP (in review)
Asclepias nummularioides W.D.Stevens Accepted M WCSP (in review)
Asclepias nutans Muhl. ex Steud. [Invalid] Unresolved L WCSP (in review)
Asclepias nutans (Klotzsch) N.E.Br. Synonym M WCSP (in review)
Asclepias nuttalliana Torr. [Illegitimate] Synonym M WCSP (in review)
Asclepias nuttalliana A.Gray [Illegitimate] Synonym M WCSP (in review)
Asclepias nuttii N.E.Br. Accepted M WCSP (in review)
Asclepias nyctaginifolia A.Gray Accepted M WCSP (in review)
Asclepias nyikana Schltr. Synonym M WCSP (in review)
Asclepias obovata Elliott Accepted M WCSP (in review)
Asclepias obtusata Greene [Unplaced] Unresolved L WCSP (in review)
Asclepias obtusifolia Michx. [Unplaced] Unresolved L WCSP (in review)
Asclepias obtusifolia Kunze [Illegitimate] Synonym L WCSP (in review)
Asclepias obtusifolia var. latifolia Torr. Synonym L WCSP (in review)
Asclepias occidentallis Goyder Accepted M WCSP (in review)
Asclepias ochroleuca (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias odorata (K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias odoratissima Roxb. Unresolved L WCSP (in review)
Asclepias oenotheroides Schltdl. & Cham. Accepted M WCSP (in review)
Asclepias orbicularis (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias oreophila Nicholas ex Hilliard & B.L.Burtt Accepted M WCSP (in review)
Asclepias otarioides E.Fourn. Accepted M WCSP (in review)
Asclepias ovalifolia Decne. Accepted M WCSP (in review)
Asclepias ovalifolia f. ovalifolia Synonym L TRO
Asclepias ovalifolia f. verticillifolia D.Löve & J.-P.Bernard Synonym L WCSP (in review)
Asclepias ovata Steud. [Invalid] Synonym M WCSP (in review)
Asclepias ovata M.Martens & Galeotti Accepted M WCSP (in review)
Asclepias oxytropis (Turcz.) Schltr. Synonym M WCSP (in review)
Asclepias pachyclada (K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias pachyglossa (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias pachystephana (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias pallida Roxb. Unresolved L WCSP (in review)
Asclepias pallida E.Fourn. [Illegitimate] Synonym M WCSP (in review)
Asclepias palmeri Vail Synonym M WCSP (in review)
Asclepias palustris (K.Schum.) Schltr. Accepted M WCSP (in review)
Asclepias paniculata Bunge Synonym M WCSP (in review)
Asclepias papillosa Silveira Synonym M WCSP (in review)
Asclepias parasitica Wall. ex Hornem. Synonym L WCSP (in review)
Asclepias parasitica Roxb. [Unplaced] Unresolved L WCSP (in review)
Asclepias parviflora Aiton Synonym M WCSP (in review)
Asclepias parviflora Schult. Synonym M WCSP (in review)
Asclepias parviflora Leconte ex Decne. Synonym M WCSP (in review)
Asclepias parviflora var. latifolia Raf. Synonym L WCSP (in review)
Asclepias parvifolia Roem. & Schult. Synonym M WCSP (in review)
Asclepias parvifolia Decne. Synonym M WCSP (in review)
Asclepias parvula (A.Gray) Vail Synonym M WCSP (in review)
Asclepias patens N.E.Br. Accepted M WCSP (in review)
Asclepias patula Decne. Synonym L WCSP (in review)
Asclepias pauciflora (Klotzsch) E.A.Bruce Unresolved L WCSP (in review)
Asclepias paupercula Michx. Synonym M WCSP (in review)
Asclepias pedicellata Walter Accepted M WCSP (in review)
Asclepias pedunculata (Decne.) Dandy Synonym M WCSP (in review)
Asclepias pellucida E.Fourn. Accepted M WCSP (in review)
Asclepias peltigera (E.Mey.) Schltr. Accepted M WCSP (in review)
Asclepias pendula Roxb. Synonym L WCSP (in review)
Asclepias peregrina Blanco Synonym L WCSP (in review)
Asclepias perennis Walter Accepted M WCSP (in review)
Asclepias perennis var. parvula A.Gray Synonym L WCSP (in review)
Asclepias periplocifolia Nutt. Synonym M WCSP (in review)
Asclepias petherickiana (Oliv.) Schltr. Unresolved L WCSP (in review)
Asclepias phenax Woodson Synonym M WCSP (in review)
Asclepias philippsiae N.E.Br. Synonym M WCSP (in review)
Asclepias phillipsiae N.E. Br. Unresolved L TRO
Asclepias physocarpa (E.Mey.) Schltr. Synonym M WCSP (in review)
Asclepias phytolaccoides G.F.Lyon ex Pursh Synonym M WCSP (in review)
Asclepias pilgeriana Schltr. Accepted M WCSP (in review)
Asclepias pilosa Vell. Synonym M WCSP (in review)
Asclepias pinifolia Greene Synonym M WCSP (in review)
Asclepias planiflora Jacq. Synonym M WCSP (in review)
Asclepias plicata B.Heyne ex Schult. [Unplaced] Unresolved L WCSP (in review)
Asclepias plumieriifolia Ram.Goyena Synonym M WCSP (in review)
Asclepias polyphylla Brandegee Synonym M WCSP (in review)
Asclepias polystachya Walter Synonym M WCSP (in review)
Asclepias praemorsa Schltr. Accepted M WCSP (in review)
Asclepias pratensis Benth. Accepted M WCSP (in review)
Asclepias praticola S.Moore Unresolved L WCSP (in review)
Asclepias princeps Bartl. [Unplaced] Unresolved L WCSP (in review)
Asclepias pringlei (Greenm.) Woodson Accepted M WCSP (in review)
Asclepias procera Aiton Synonym L WCSP (in review)
Asclepias procumbens Raf. [Unplaced] Unresolved L WCSP (in review)
Asclepias prolifera Rottler ex Ainslie [Unplaced] Unresolved L WCSP (in review)
Asclepias propinqua N.E.Br. Unresolved L WCSP (in review)
Asclepias prostrata W.H.Blackw. Accepted M WCSP (in review)
Asclepias pseudoamabilis Goyder Accepted M WCSP (in review)
Asclepias pseudocrispa Schltr. [Unplaced] Unresolved L WCSP (in review)
Asclepias pseudofimbriata (Goyder) Goyder Accepted M WCSP (in review)
Asclepias pseudorubricaulis Woodson Accepted M WCSP (in review)
Asclepias pseudosarsa Roxb. Unresolved L WCSP (in review)
Asclepias puberula A.Gray Accepted M WCSP (in review)
Asclepias pubescens L. Synonym M WCSP (in review)
Asclepias pubescens Moench [Illegitimate] Synonym M WCSP (in review)
Asclepias pubigera Dumort. Synonym M WCSP (in review)
Asclepias pubiseta N.E.Br. Synonym M WCSP (in review)
Asclepias pulchella Salisb. Synonym M WCSP (in review)
Asclepias pulchella Roxb. Unresolved L WCSP (in review)
Asclepias pulchella (Decne.) N.E.Br. [Illegitimate] Synonym M WCSP (in review)
Asclepias pulchra Ehrh. ex Willd. Synonym M WCSP (in review)
Asclepias pulchra Vell. Synonym L WCSP (in review)
Asclepias pulchra f. albiflora House Synonym L WCSP (in review)
Asclepias pumila (A.Gray) Vail Accepted M WCSP (in review)
Asclepias purpurascens L. Accepted M WCSP (in review)
Asclepias purpurascens Georgi [Illegitimate] Synonym L WCSP (in review)
Asclepias purpurascens Walter [Illegitimate] Synonym L WCSP (in review)
Asclepias purpurea Pall. Synonym M WCSP (in review)
Asclepias purpusii Brandegee Synonym M WCSP (in review)
Asclepias pygmaea N.E.Br. Accepted M WCSP (in review)
Asclepias quadrifolia Jacq. Accepted M WCSP (in review)
Asclepias quadrifolia var. lanceolata Decne. Synonym L WCSP (in review)
Asclepias quadrifolia var. oppositifolia Raf. Synonym L WCSP (in review)
Asclepias quinquedentata A.Gray Accepted M WCSP (in review)
Asclepias quinquedentata var. neomexicana Greene ex A.Gray Synonym L WCSP (in review)
Asclepias quinqueflora Vell. [Unplaced] Unresolved L WCSP (in review)
Asclepias racemosa Jacq. Synonym M WCSP (in review)
Asclepias racemosa Roxb. [Illegitimate] Synonym M WCSP (in review)
Asclepias radians Forssk. Synonym M WCSP (in review)
Asclepias radiata S.Moore Synonym M WCSP (in review)
Asclepias rafaelensis Brandegee Accepted M WCSP (in review)
Asclepias ramosa E.Fourn. Synonym M WCSP (in review)
Asclepias randii S.Moore Accepted M WCSP (in review)
Asclepias rara N.E.Br. Accepted M WCSP (in review)
Asclepias ratiata S. Moore Unresolved L TRO
Asclepias rectinervis (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias reenensis N.E.Br. Synonym M WCSP (in review)
Asclepias reflectens (E.Mey.) Schltr. Unresolved L WCSP (in review)
Asclepias reflexa (Britten & Rendle) Britten & Rendle Unresolved L WCSP (in review)
Asclepias repanda Forssk. ex Steud. [Invalid] Unresolved L WCSP (in review)
Asclepias repanda Sessé & Moc. [Unplaced] Unresolved L WCSP (in review)
Asclepias revoluta Raf. Synonym M WCSP (in review)
Asclepias rhacodes (K.Schum.) N.E.Br. Unresolved L WCSP (in review)
Asclepias rhodesica Weim. Synonym M WCSP (in review)
Asclepias rigida (E.Mey. ex Eckl. & Zeyh.) Schltr. Synonym M WCSP (in review)
Asclepias rigidus Schltr. Unresolved L TRO
Asclepias rivalis S.Moore Synonym M WCSP (in review)
Asclepias rivularis (Schltr.) Schltr. Synonym M WCSP (in review)
Asclepias robusta (A.Rich.) N.E.Br. Unresolved L WCSP (in review)
Asclepias rolfsii Britton ex Vail Synonym M WCSP (in review)
Asclepias rosea Kunth Accepted M WCSP (in review)
Asclepias rosea Roxb. [Illegitimate] Synonym M WCSP (in review)
Asclepias rostrata N.E.Br. Synonym M WCSP (in review)
Asclepias rothrockii Greene [Unplaced] Unresolved L WCSP (in review)
Asclepias rotundifolia Mill. Synonym M WCSP (in review)
Asclepias rotundifolia Raf. [Illegitimate] Synonym M WCSP (in review)
Asclepias rubella N.E.Br. Synonym M WCSP (in review)
Asclepias rubicunda Schltr. Synonym M WCSP (in review)
Asclepias rubra L. Accepted M WCSP (in review)
Asclepias rubra Siev. [Illegitimate] Synonym M WCSP (in review)
Asclepias rubra var. laurifolia (Michx.) R.M.Harper Synonym L WCSP (in review)
Asclepias rubricaulis Kunth Accepted M WCSP (in review)
Asclepias rusbyi (Vail) Woodson Accepted M WCSP (in review)
Asclepias ruthiae Maguire Synonym M WCSP (in review)
Asclepias rzedowskii W.D.Stevens Synonym M WCSP (in review)
Asclepias sabulosa Schltr. Synonym M WCSP (in review)
Asclepias salicifolia Salisb. [Illegitimate] Synonym M WCSP (in review)
Asclepias salicifolia Lodd. [Unplaced] Unresolved L WCSP (in review)
Asclepias sanjuanensis K.D.Heil, J.M.Porter & S.L.Welsh Synonym M WCSP (in review)
Asclepias scabra (Harv.) Schltr. Unresolved L WCSP (in review)
Asclepias scabridifolia Schltr. Unresolved L WCSP (in review)
Asclepias scabrifolia S.Moore Synonym M WCSP (in review)
Asclepias scandens Mill. Unresolved L WCSP (in review)
Asclepias scandens P.Beauv. [Illegitimate] Synonym L WCSP (in review)
Asclepias scandens Sessé & Moc. [Unplaced] Unresolved L WCSP (in review)
Asclepias scaposa Vail Accepted M WCSP (in review)
Asclepias schaffneri A.Gray Accepted M WCSP (in review)
Asclepias scheryi Woodson Accepted M WCSP (in review)
Asclepias schinziana (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias schizoglossoides Schltr. Synonym M WCSP (in review)
Asclepias schlechteri (K.Schum.) N.E.Br. Accepted M WCSP (in review)
Asclepias schumanniana Hiern Accepted M WCSP (in review)
Asclepias schweinfurthii N.E.Br. Synonym M WCSP (in review)
Asclepias selloana E.Fourn. Synonym M WCSP (in review)
Asclepias semiamplectens (K.Schum.) Hiern Synonym M WCSP (in review)
Asclepias semilunata (A.Rich.) N.E.Br. Synonym M WCSP (in review)
Asclepias senecionifolia M.E.Jones Synonym M WCSP (in review)
Asclepias serica Raf. [Illegitimate] Synonym M WCSP (in review)
Asclepias serpentaria Raf. Synonym M WCSP (in review)
Asclepias setosa Forssk. Synonym M WCSP (in review)
Asclepias setosa Benth. [Illegitimate] Synonym M WCSP (in review)
Asclepias shabaensis (Goyder) Goyder Accepted M WCSP (in review)
Asclepias sibirica L. Synonym L WCSP (in review)
Asclepias similis Hemsl. Accepted M WCSP (in review)
Asclepias simplex (Schltr.) Schltr. Synonym M WCSP (in review)
Asclepias simpsonii Chapm. [Unplaced] Unresolved L WCSP (in review)
Asclepias sinaica (Boiss.) Muschl. Synonym M WCSP (in review)
Asclepias singularis Vell. [Unplaced] Unresolved L WCSP (in review)
Asclepias sinuosa Burm.f. Synonym M WCSP (in review)
Asclepias solanoana Woodson Accepted M WCSP (in review)
Asclepias solstitialis A.Chev. Accepted M WCSP (in review)
Asclepias speciosa Torr. Accepted M WCSP (in review)
Asclepias spectabile N.E. Br. Unresolved L TRO
Asclepias spectabilis N.E.Br. Unresolved L WCSP (in review)
Asclepias sperryi Woodson Accepted M WCSP (in review)
Asclepias sphacelata (K.Schum.) N.E.Br. Accepted M WCSP (in review)
Asclepias spinosa Vell. [Unplaced] Unresolved L WCSP (in review)
Asclepias spiraliflora Stokes Synonym L WCSP (in review)
Asclepias spiralis Forssk. Synonym L WCSP (in review)
Asclepias standleyi Woodson Accepted M WCSP (in review)
Asclepias stathmostelmoides Goyder Accepted M WCSP (in review)
Asclepias stellata Burm. ex Decne. Synonym M WCSP (in review)
Asclepias stellifera Schltr. Accepted M WCSP (in review)
Asclepias stenophylla A.Gray Accepted M WCSP (in review)
Asclepias stipitacea Forssk. Synonym M WCSP (in review)
Asclepias stockenstromense Schltr. Unresolved L TRO
Asclepias stockenstromensis (Scott-Elliot) Schltr. Unresolved L WCSP (in review)
Asclepias stolzianus (K.Schum.) N.E.Br. Synonym L WCSP (in review)
Asclepias suaveolens Leconte ex Decne. Synonym M WCSP (in review)
Asclepias subaphylla Woodson Accepted M WCSP (in review)
Asclepias suberosa Roxb. Unresolved L WCSP (in review)
Asclepias subulata Forssk. Unresolved L WCSP (in review)
Asclepias subulata Decne. Accepted M WCSP (in review)
Asclepias subulata Larrañaga [Illegitimate] Synonym M WCSP (in review)
Asclepias subverticillata (A.Gray) Vail Accepted M WCSP (in review)
Asclepias subviridis S.Moore Accepted M WCSP (in review)
Asclepias suffrutex Standl. Accepted M WCSP (in review)
Asclepias sullivantii Engelm. ex A.Gray Accepted M WCSP (in review)
Asclepias sullivantii Torr. Synonym M WCSP (in review)
Asclepias sulphurea Schltr. Unresolved L WCSP (in review)
Asclepias sussuela Roxb. Synonym M WCSP (in review)
Asclepias swynnertonii S.Moore Synonym M WCSP (in review)
Asclepias syriaca L. Accepted M WCSP (in review)
Asclepias syriaca var. exaltata (L.) L. Synonym L WCSP (in review)
Asclepias syriaca f. inermis J.R.Churchill Synonym L WCSP (in review)
Asclepias syriaca var. kansana (Vail) E.J.Palmer & Steyerm. Synonym L WCSP (in review)
Asclepias syriaca f. leucantha Dore Synonym L WCSP (in review)
Asclepias syriaca f. polyphylla B.Boivin Synonym L WCSP (in review)
Asclepias syriaca f. syriaca Synonym L TRO
Asclepias syriaca var. syriaca Synonym L TRO
Asclepias tanganyikensis E.A.Bruce Accepted M WCSP (in review)
Asclepias tapalpana M.E.Jones Accepted M WCSP (in review)
Asclepias tenacissima Roxb. Synonym M WCSP (in review)
Asclepias tenuifolia N.E.Br. Synonym M WCSP (in review)
Asclepias tenuifolia Schltr. [Illegitimate] Unresolved L WCSP (in review)
Asclepias tenuis Hook.f. Unresolved L WCSP (in review)
Asclepias tenuissima Roxb. Unresolved L WCSP (in review)
Asclepias tetrapetala Dennst. Unresolved L WCSP (in review)
Asclepias texana A.Heller Accepted M WCSP (in review)
Asclepias tinctoria Roxb. Unresolved L WCSP (in review)
Asclepias tingens Roxb. Unresolved L WCSP (in review)
Asclepias tithymaloides Greene Synonym M WCSP (in review)
Asclepias tomentosa Elliott Accepted M WCSP (in review)
Asclepias tomentosa Thonn. ex Decne. Synonym M WCSP (in review)
Asclepias tomentosa Hook.f. [Illegitimate] Synonym M WCSP (in review)
Asclepias toxicaria Salisb. Synonym M WCSP (in review)
Asclepias transvaalensis (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias tricorniculata Schltr. Unresolved L TRO
Asclepias truncata Willd. [Unplaced] Unresolved L WCSP (in review)
Asclepias truncata Roxb. ex Decne. Synonym M WCSP (in review)
Asclepias tuberosa L. Accepted M WCSP (in review)
Asclepias tuberosa f. bicolor Standl. Synonym L WCSP (in review)
Asclepias tuberosa var. cordata Beck Synonym L WCSP (in review)
Asclepias tuberosa var. decumbens (L.) Pursh Synonym L WCSP (in review)
Asclepias tuberosa f. decumbens (L.) Voss Synonym L WCSP (in review)
Asclepias tuberosa f. flavescens Farw. Synonym L WCSP (in review)
Asclepias tuberosa var. flexuosa J.James Synonym L WCSP (in review)
Asclepias tuberosa subsp. interior Woodson Accepted L WCSP (in review)
Asclepias tuberosa var. interior (Woodson) Shinners Synonym L WCSP (in review)
Asclepias tuberosa var. interior (Woodson) Seymour Synonym L TRO
Asclepias tuberosa f. lutea Clute Synonym L WCSP (in review)
Asclepias tuberosa var. rolfsii (Britton ex Vail) Shinners Synonym L WCSP (in review)
Asclepias tuberosa subsp. terminalis Woodson Synonym L WCSP (in review)
Asclepias tuberosa f. tuberosa Synonym L TRO
Asclepias tuberosa subsp. tuberosa Synonym L TRO
Asclepias tuberosa var. tuberosa Synonym L TRO
Asclepias tunicata Hook.f. Unresolved L WCSP (in review)
Asclepias tysoniana Schltr. Unresolved L WCSP (in review)
Asclepias ulophylla Schltr. Accepted M WCSP (in review)
Asclepias umbellata Vell. Synonym M WCSP (in review)
Asclepias uncialis Greene Accepted M WCSP (in review)
Asclepias uncialis var. ruthiae (Maguire) Sundell Synonym L WCSP (in review)
Asclepias uncialis subsp. ruthiae (Maguire) J.T.Kartesz & Gandhi Accepted L WCSP (in review)
Asclepias undulata L. Synonym M WCSP (in review)
Asclepias undulata Jacq. [Illegitimate] Synonym M WCSP (in review)
Asclepias uvirensis S.Moore Unresolved L WCSP (in review)
Asclepias valida (Schltr.) Schltr. Unresolved L WCSP (in review)
Asclepias vanilla Raf. Synonym M WCSP (in review)
Asclepias variegata L. Accepted M WCSP (in review)
Asclepias variegata var. major Hook. Synonym L WCSP (in review)
Asclepias variegata var. minor Hook. Synonym L WCSP (in review)
Asclepias velutina (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias verdickii (De Wild.) De Wild. Accepted M WCSP (in review)
Asclepias verecunda Salisb. Synonym M WCSP (in review)
Asclepias verticillata L. Accepted M WCSP (in review)
Asclepias verticillata var. galioides (Kunth) Decne. Synonym L WCSP (in review)
Asclepias verticillata var. leptophylla Torr. Synonym L WCSP (in review)
Asclepias verticillata var. linearis (Scheele) Pollard Synonym L WCSP (in review)
Asclepias verticillata var. linifolia (Kunth) Decne. Synonym L WCSP (in review)
Asclepias verticillata var. mexicana (Cav.) E.Fourn. Synonym L WCSP (in review)
Asclepias verticillata var. pumila A.Gray Synonym L WCSP (in review)
Asclepias verticillata var. subverticillata A.Gray Synonym L WCSP (in review)
Asclepias vestita Hook. & Arn. Accepted M WCSP (in review)
Asclepias vestita var. parishii Jeps. Synonym L WCSP (in review)
Asclepias vestita subsp. parishii (Jeps.) Woodson Accepted L WCSP (in review)
Asclepias vestita var. vestita Synonym L TRO
Asclepias vexillare Schltr. Unresolved L TRO
Asclepias vexillata Schltr. Unresolved L WCSP (in review)
Asclepias vicaria N.E.Br. Accepted M WCSP (in review)
Asclepias vicinalis Mart. [Invalid] Synonym L WCSP (in review)
Asclepias villosa Mill. Unresolved L WCSP (in review)
Asclepias villosa Balb. [Illegitimate] Synonym M WCSP (in review)
Asclepias viminalis Sw. Synonym L WCSP (in review)
Asclepias vincetoxicum L. Synonym M WCSP (in review)
Asclepias vinosa (E.Fourn.) Woodson Accepted M WCSP (in review)
Asclepias virgata Balb. Synonym M WCSP (in review)
Asclepias viridiflora Raf. Accepted M WCSP (in review)
Asclepias viridiflora Roxb. ex Decne. [Invalid] Synonym L WCSP (in review)
Asclepias viridiflora (E.Mey.) Goyder [Illegitimate] Synonym M WCSP (in review)
Asclepias viridiflora var. lanceolata (E.Ives) Torr. Synonym L WCSP (in review)
Asclepias viridiflora var. linearis (A.Gray) Fernald Synonym L WCSP (in review)
Asclepias viridiflora var. obovata (Elliott) Torr. Synonym L WCSP (in review)
Asclepias viridiflora var. pubescentitomentosa Hook. Synonym L WCSP (in review)
Asclepias viridiflora var. viridiflora Synonym L TRO
Asclepias viridis Walter Accepted M WCSP (in review)
Asclepias viridula Chapm. Accepted M WCSP (in review)
Asclepias virletii E.Fourn. Accepted M WCSP (in review)
Asclepias volubilis L.f. Synonym L WCSP (in review)
Asclepias volubilis Dombey ex Decne. Synonym L WCSP (in review)
Asclepias volubilis Hook.f. Unresolved L WCSP (in review)
Asclepias vomeriformis S.Moore Unresolved L WCSP (in review)
Asclepias vomitoria K.D.Koenig ex Hook.f. [Invalid] Unresolved L WCSP (in review)
Asclepias weddellii E.Fourn. Synonym M WCSP (in review)
Asclepias welshii N.H.Holmgren & P.K.Holmgren Accepted M WCSP (in review)
Asclepias welwitschii (Britten & Rendle) N.E.Br. Synonym M WCSP (in review)
Asclepias woodii (Schltr.) Schltr. Accepted M WCSP (in review)
Asclepias woodsoniana Standl. & Steyerm. Accepted M WCSP (in review)
Asclepias wrightii Greene Synonym M WCSP (in review)
Asclepias xysmalobioides S.Moore Synonym M WCSP (in review)
Asclepias xysmalobioides Hilliard & B.L.Burtt [Unplaced] Unresolved L WCSP (in review)
Asclepias zacatecana McVaugh Synonym M WCSP (in review)
Asclepias zanthodacryon (L.B.Sm.) Woodson Accepted M WCSP (in review)
Asclepias zeylanica Burm. ex Decne. Unresolved L WCSP (in review)