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This genus is accepted, and its native range is Tropical & Subtropical Old World.
A specimen from Kew's Herbarium

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Climbers, shrubs or small trees; latex white
Morphology Leaves
Leaves opposite on normal shoots, ± clustered on stunted shoots, petiolate to sessile
Morphology Reproductive morphology Inflorescences
Inflorescences few–many-flowered or flowers solitary
Morphology Reproductive morphology Flowers Corolla
Corolla-tube campanulate and shorter than lobes, rarely cylindrical and longer than lobes, mostly with elliptic papillose spot below every corona-lobe, gynostegium enclosed and concealed within corolla-tube
Morphology Reproductive morphology Flowers Corona
Corona inserted at middle of corolla-tube; lobes clavate, subulate, triangular, arrow-like or filiform, mostly hidden in corolla-tube; extra corona of pockets or corniculate or filiform lobes from sinuses of corolla-lobes sometimes present
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted at base of corolla-tube; anthers deltoid to hastate, glabrous or rarely hairy; pollen in tetrads
Morphology Reproductive morphology Flowers Nectaries
Interstaminal nectiferous pouches at base of corolla-tube
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmatic head conical; pollen translators narrowly elliptic. Follicles paired, widely to narrowly divergent, cylindrical-ovoid to narrowly ovoid
Morphology Reproductive morphology Seeds
Seeds with tuft of hairs at one end.
Distribution
Over 40 species in Africa and Asia, the vast majority in Africa and on Socotra.

[FTEA]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Mesophytic climbers or sclerophyllous shrubs, scramblers or small trees with white or occasionally yellow or orange latex; interpetiolar ridges and leaf axils with reddish dentate colleters
Morphology Leaves
Leaves opposite on normal shoots, sub-fascicled on stunted shoots, petiolate to sessile; blade herbaceous, leathery or succulent
Morphology Reproductive morphology Inflorescences
Inflorescences few to many-flowered or flowers solitary
Morphology Reproductive morphology Flowers
Flower buds with corolla apex helically twisted and deltoid to apiculate
Morphology Reproductive morphology Flowers Corolla
Corolla tube campanulate and shorter than lobes, rarely cylindrical and longer than lobes, mostly with elliptic papillose spot below every corona lobe; lobes linear to ovate
Morphology Reproductive morphology Flowers Corona
Corolline corona 1- or 2-whorled; lower whorl of lobes inserted around middle of corolla tube, mostly concealed; lobes clavate, acicular, peg-like or filiform, glabrous, free; upper whorl, when present, of simple pockets or lobed pockets in corolla lobe sinuses Gynostegial corona absent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted near base of corolla tube.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments short, mostly dilated.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers deltoid to hastate, glabrous or rarely hairy; pollen in tetrads
Morphology Reproductive morphology Flowers Nectaries
Insterstaminal nectifery pouches at base of corolla tube
Morphology Reproductive morphology Flowers Gynoecium Style
Style-head deltoid, broadly deltoid, ovoid or broadly ovoid, translators with receptacle concavely narrowly elliptic and sessile on sticky disc.
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium concealed at bottom of corolla tube
Morphology Reproductive morphology Fruits
Follicles paired, widely to narrowly divergent, cylindrical-ovoid to narrowly ovoid.

[FTEA]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Lianas with white latex.
Morphology Stem
Stems woody, twining
Morphology Leaves
Leaves glabrous, petiolate, leathery
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, many-flowered, glabrous
Morphology Reproductive morphology Flowers Calyx
Sepals glabrous, with colleters at their inner bases.
Morphology Reproductive morphology Flowers Corolla
Corolla coriaceous, deep crimson, purplish or pink
Morphology Reproductive morphology Flowers Corona
Corolline corona near base of corolla tube or on inversion of corolla tube, coronal feet fused to stamens and nectaries forming a collar Gynostegial corona absent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens arising from inner base of coronal feet; pollen in tetrads
Morphology Reproductive morphology Flowers Gynoecium Style
Style terete; style-head deltoid, obtuse; translator with receptacle, stalk and sticky disc
Morphology Reproductive morphology Fruits
Follicles paired, horizontally opposite
Note
Young stems, leaves, peduncles and flowers of both species turn black when drying. The flowers are so different in morphology that the two species were separated in different genera (Venter & Verhoeven in S. Afr. Journ. Bot. 62: 23–30 (1996)), but DNA-analysis proves them to be sister species (Ionta & Judd in Ann. Missouri Bot. Gard. 94: 372 (2007)).

Native to:

Andaman Is., Angola, Assam, Bangladesh, Benin, Botswana, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, Chad, China South-Central, China Southeast, Congo, East Himalaya, Equatorial Guinea, Ethiopia, Free State, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Hainan, India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Laos, Liberia, Malawi, Malaya, Mali, Mozambique, Myanmar, Namibia, Nepal, Nigeria, Northern Provinces, Pakistan, Philippines, Rwanda, Senegal, Sierra Leone, Socotra, Somalia, Sri Lanka, Sudan, Swaziland, Taiwan, Tanzania, Thailand, Togo, Uganda, Vietnam, West Himalaya, Yemen, Zambia, Zaïre, Zimbabwe

Cryptolepis R.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [Cat. no. s.n.], Myanmar K001132412
s.coll. [Cat. no. s.n.] K001132411

First published in Asclepiadeae: 58 (1810)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

Literature

Flora of West Tropical Africa

  • —F.T.A. 4, 1: 242, partly.

Flora of Somalia

  • Flora Somalia, Vol 3, (2006) Author: by J. Venter [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Asclepiadeae: 58 (1810)
  • F.T.A. 4(1): 242 (1902)
  • Fl. Cap. 4(1): 526 (1907)

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0