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This genus is accepted, and its native range is Tropical & S. Africa to Central Malesia.
Strophanthus boivinii

[FZ]

Apocynaceae, A. J. M. Leeuwenberg & F. K. Kupicha et al. Flora Zambesiaca 7:2. 1985

Morphology General Habit
Lianas or sarmentose shrubs; latex present.
Morphology Stem
Trunk dichotomously or trichotomously branched or with single or opposite lateral branches, unarmed, lenticellate.
Morphology Leaves
Leaves decussate or ternate, rarely quaternate, those of a pair or a whorl equal or subequal, with 2–20 colleters in the leaf axil; lamina ovate, elliptic or obovate.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal (often on short lateral branches) or in the forks of branches, one to many-flowered in cymes; bracts sepal-like or smaller in size, in the axil with colleters.
Morphology Reproductive morphology Flowers
Flowers actinomorphic or with only the sepals unequal.
Morphology Reproductive morphology Flowers Calyx
Sepals imbricate, free to the base, at the base inside with colleters.
Morphology Reproductive morphology Flowers Corolla
Corolla consisting of tube, corona, and lobes; colour scheme based on contrasting white and red, later turning yellow and purple; tube widening at the level where the anthers are inserted; corona 10-lobed with the lobes arranged in partly connate pairs at the basal margins of the lobes; lobes often produced into long, linear tails overlapping to the right, in open flowers spreading or recurved, basal part of lobe ovate.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included or partly exserted, anthers connivent in a cone around the apex of the style, auriculate at the base, mucronate or acuminate at the apex.
Morphology Reproductive morphology Flowers Disc
Disk absent.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-celled, semi-inferior or rarely superior, ovoid, with many ovules; style slender, glabrous; clavuncula with a basal frill and an apical crown surrounding the small stigma.
Morphology Reproductive morphology Fruits
Fruit of 2 divergent, rigid, woody or thin-woody follicles, many- or rarely few-seeded, tapering to their apex and ending in a narrow point or a knob.
Morphology Reproductive morphology Seeds
Seeds rostrate, with a rostrate apical coma; grain almost fusiform; rostrum often partly glabrous; endosperm in a thin layer completely surrounding the spathulate, straight embryo.

[FTEA]

Apocynaceae, E.A. Omino. Flora of Tropical East Africa. 2002

Morphology General Habit
Shrubs, sarmentose shrubs, or lianas, rarely trees (but not in our area); latex present in most parts; bark rough, sometimes with corky protuberances, lenticellate; stipules reduced to small rims
Morphology Leaves
Leaves opposite or ternate, rarely quaternate, with colleters in the axil of the petiole
Morphology Reproductive morphology Inflorescences
Inflorescence terminal or in forks of branches, rarely axillary, 1–many-flowered in simple or compound dichasial cymes; bracts sepal-like or scarious
Morphology Reproductive morphology Flowers
Flowers 5-merous
Morphology Reproductive morphology Flowers Calyx
Calyx imbricate-quincuncial, deciduous in fruit, colleters present adaxially
Morphology Reproductive morphology Flowers Corolla
Corolla often with long tails to the lobes, the tube cylindrical proximally and slightly wider distally becoming infundibuliform, at the mouth with a 10-lobed corona, the lobes erect and in pairs at the margins of the corolla lobes, lobes alternisepalous, overlapping to the right, ovate to oblong, at the apex acute to tailed
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included or partly exserted, connate to the style and forming a cone around the distal part of the style and stigma
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2–celled, the cells partly connate, style terete, stigma subtended by an angular clavuncula
Morphology Reproductive morphology Fruits
Fruit of 2 woody mericarps on a thickened woody pedicel, the mericarps usually divergent
Morphology Reproductive morphology Seeds
Seeds many per mericarp, narrowly ovoid with a beaked apical coma.

[FSOM]

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

Morphology General Habit
Lianas or shrubs; latex amber (in Flora area)
Morphology Leaves
Leaves opposite
Morphology Reproductive morphology Inflorescences
Flowers in one- to many-flowered terminal cymes, often on short lateral branches, or in the forks of branches
Morphology Reproductive morphology Flowers Corolla
Corolla-lobes overlapping to the right in bud, often produced into long linear tails; corona present, 10-lobed
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included or partly exserted
Morphology Reproductive morphology Flowers Gynoecium Style
Style coherent with anthers, shed with the corolla
Morphology Reproductive morphology Fruits
Fruit of 2 spreading rigid follicles, usually many-seeded
Morphology Reproductive morphology Seeds
Seeds beaked, with long hairs at tip of beak.
Distribution
Genus of 38 species in Africa, Madagascar and Asia.

Native to:

Andaman Is., Angola, Assam, Bangladesh, Benin, Borneo, Botswana, Burkina, Cabinda, Cambodia, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, China South-Central, China Southeast, Congo, East Himalaya, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Hainan, India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Laos, Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Maluku, Mauritania, Mozambique, Myanmar, Namibia, New Guinea, Nicobar Is., Niger, Nigeria, Northern Provinces, Philippines, Rwanda, Senegal, Sierra Leone, Somalia, Sulawesi, Sumatera, Swaziland, Tanzania, Thailand, Togo, Uganda, Vietnam, Zambia, Zaïre, Zimbabwe

Introduced into:

Taiwan, Trinidad-Tobago

Strophanthus DC. appears in other Kew resources:

First published in Bull. Sci. Soc. Philom. Paris 3: 122 (1802)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • Gilg in Engl. Monogr. Afr. Apocynac. 7 (1903).
  • —F.T.A. 4, 1: 167

Flora Zambesiaca

  • Beentje in Meded. Landb. Wag. 82–4: 17 (1982).
  • in Bull. Soc. Philom. 64: 122 (1802).

Flora of Somalia

  • Beentje in Meded. Landbouwhogeschool Wageningen 82-4 (1982).
  • Flora Somalia, Vol 3, (2006) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Beentje in Meded. Landbouwhogeschool 82 (4): 17 (1982)
  • Gilg, Monogr. Afr. Pfl.-Fam. & Gatt. 7: 7 (1903)
  • in Bull. Soc. Philom. 64: 122 (1802)

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

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

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