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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Apocynaceae
Subfamilia: Asclepiadoideae
Tribus: Asclepiadeae
Subtribus: Asclepiadinae
Genus: Xysmalobium
Species: X. acerateoides – X. andongense – X. asperum – X. banjoense – X. baurii – X. brownianum – X. carinatum – X. clavatum – X. confusum – X. congoense – X. convallariiflorum – X. decipiens – X. fluviale – X. fraternum – X. gerrardii – X. gomphocarpoides – X. gossweileri – X. gramineum – X. heudelotianum – X. holubii – X. involucratum – X. kaessneri – X. membraniferum – X. orbiculare – X. parviflorum – X. patulum – X. pearsonii – X. pedifoetidum – X. podostelma – X. prunelloides – X. rhodesianum – X. rhomboideum – X. samoritourei – X. sessile – X. stockenstromense – X. stocksii – X. tenue – X. tysonianum – X. undulatum – X. winterbergense – X. woodii – X. zeyheri

Xysmalobium R.Br., Asclepiadeae: 27 (1810)

Type species: Xysmalobium undulatum (L.) W.T.Aiton, Hortus Kew. 2: 79 (1811)


Pachyacris Schltr., J. Bot. 33: 358 (1895)


Brown, R. 1810. On the Asclepiadeae 27.
Govaerts, R. et al. 2017. Xysmalobium in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2017 Sept. 2. Reference page.
International Plant Names Index. 2017. Xysmalobium. Published online. Accessed: Sept. 2 2017. 2017. Xysmalobium. Missouri Botanical Garden. Published on the internet. Accessed: 2017 Sept. 2.

Xysmalobium is a genus of plants in the family Apocynaceae, first described as a genus in 1810. It is native to Africa.[3]


Xysmalobium acerateoides
Xysmalobium andongense
Xysmalobium asperum
Xysmalobium banjoense
Xysmalobium baurii
Xysmalobium brownianum
Xysmalobium carinatum
Xysmalobium clavatum
Xysmalobium confusum
Xysmalobium congoense
Xysmalobium decipiens
Xysmalobium fraternum
Xysmalobium gerrardii
Xysmalobium gomphocarpoides
Xysmalobium gossweileri
Xysmalobium gramineum
Xysmalobium heudelotianum
Xysmalobium holubii
Xysmalobium involucratum
Xysmalobium kaessneri
Xysmalobium ligulatum
Xysmalobium membraniferum
Xysmalobium obscurum
Xysmalobium orbiculare
Xysmalobium parviflorum
Xysmalobium patulum
Xysmalobium pearsonii
Xysmalobium prunelloides
Xysmalobium reticulatum
Xysmalobium rhodesianum
Xysmalobium rhomboideum
Xysmalobium samoritourei
Xysmalobium sessile
Xysmalobium stockenstromense
Xysmalobium stocksii
Xysmalobium tenue
Xysmalobium trauseldii
Xysmalobium tysonianum
Xysmalobium undulatum
Xysmalobium vexillare
Xysmalobium winterbergense
Xysmalobium woodii
Xysmalobium zeyheri

formerly included

moved to other genera (Asclepias, Glossostelma, Gomphocarpus, Pachycarpus)

X. albens, syn of Asclepias albens
X. appendiculatum, syn of Asclepias appendiculata
X. carsoni, syn of Glossostelma carsonii
X. cecilae, syn of Glossostelma ceciliae
X. concolor, syn of Asclepias concolor
X. coronarium, syn of Gomphocarpus coronarius
X. crispum, syn of Asclepias crispa
X. dealbatum, syn of Asclepias dealbata
X. grandiflorum, syn of Gomphocarpus grandiflorus
X. humile, syn of Asclepias humilis
X. marginatum, syn of Gomphocarpus marginatus
X. reflectens, syn of Asclepias reflectens
X. rigidum, syn of Pachycarpus rigidus
X. spurium, syn of Pachycarpus spurius
X. viridiflorum, syn of Asclepias fulva


lectotype designated by Bullock, Kew Bull. 1952: 413 (1952)
"Xysmalobium". Global Biodiversity Information Facility. Retrieved 16 August 2021.
Brown, Robert. 1810. On the Asclepiadeae 27
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