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This genus is accepted, and its native range is Ethiopia to S. Africa, Tropical & Subtropical Asia.
A specimen from Kew's Herbarium

[FZ]

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

Morphology General Habit
Shrubs or trees, occasionally climbers (not in F.Z. area).
Morphology Leaves
Leaves opposite, with colleters in the axils, petiolate; lamina eglandular.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, aggregated, dichasial or monochasial, few- to many-flowered.
Morphology Reproductive morphology Flowers
Flowers actinomorphic except for the subequal sepals.
Morphology Reproductive morphology Flowers Calyx
Sepals almost free, imbricate, with 1–2 alternate colleters.
Morphology Reproductive morphology Flowers Corolla
Corolla subrotate to subinfundibuliform, occasionally infundibuliform or hypocrateriform; tube cylindrical to campanulate, constricted at or near the mouth or not; lobes overlapping to the left; corona variously shaped, only absent in the Asian W. religiosa.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens exserted or included (not in F.Z. area); anthers narrowly triangular, partly fertile, introrse.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary composed of 2 basally free or slightly connate carpels, united at the apex by the style; style often split at the base and widened at the apex; clavuncula coherent with the anthers, subcapitate or subcylindrical, with a basal collar; stigma bi-apiculate, minute.
Morphology Reproductive morphology Flowers Disc
Disk none.
Morphology Reproductive morphology Fruits
Fruit composed of two follicles; follicles connate at the extreme base and sometimes also at the apex (not in F.Z. area), terete to laterally compressed, dehiscent throughout by an adaxial slit.
Morphology Reproductive morphology Seeds
Seeds numerous, narrowly fusiform, not rostrate, with an apical coma directed towards the base of the fruit.

[FTEA]

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

Morphology General Habit
Shrubs or trees, occasionally climbers (not in our area); white latex present
Morphology Leaves
Leaves opposite, with colleters in the axils
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, dichasial or monochasial, few to many-flowered
Morphology Reproductive morphology Flowers Calyx
Sepals almost free, imbricate, with 1–2 alternate colleters within
Morphology Reproductive morphology Flowers Corolla
Corolla subrotate to infundibuliform; tube cylindrical to campanulate; lobes overlapping to the left; corona variously shaped
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens exserted or included (not in Africa); anthers narrow, partly fertile, introrse
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary of 2 carpels, free or slightly connate at the base, united at the apex by the style; pistil head coherent with the anthers, subcapitate or subcylindrical, provided with a basal collar, stigmoid apex minutely bifid
Morphology Reproductive morphology Fruits
Fruit of two follicles, completely connate (not in our area) or only at the extreme base and sometimes at the apex, dehiscent throughout by an adaxial slit
Morphology Reproductive morphology Seeds
Seeds numerous, narrowly fusiform, not beaked, with an apical coma directed towards the base of the fruit; testa thin, smooth; endosperm absent.

[FSOM]

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

Distribution
Genus of 23 species in the Old World, two of which in Africa.
Morphology General Habit
Shrubs, trees or occasionally climbers; latex white
Morphology Leaves
Leaves opposite
Morphology Reproductive morphology Flowers
Flowers in few- to many-flowered terminal cymes
Morphology Reproductive morphology Flowers Corolla
Corolla-tube cylindrical to campanulate; lobes overlapping to the left in bud; corona usually present
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens exserted or included
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary of 2 carpels, free or slightly united at the base and connected at the apex by the style; stigmatic head coherent with the anthers and shed with the corolla
Morphology Reproductive morphology Fruits
Fruit of 2 follicles united at the base
Morphology Reproductive morphology Seeds
Seeds many, with an apical tuft of hairs.

Native to:

Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Cambodia, China South-Central, China Southeast, East Himalaya, Ethiopia, Hainan, India, Jawa, Kenya, KwaZulu-Natal, Laos, Lesser Sunda Is., Malaya, Maluku, Mozambique, Myanmar, Nepal, New Guinea, Northern Provinces, Northern Territory, Philippines, Queensland, Somalia, Sri Lanka, Sulawesi, Sumatera, Swaziland, Thailand, Vietnam, West Himalaya, Zimbabwe

Wrightia R.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [Cat. no. s.n.], India K001132402
s.coll. [Cat. no. s.n.] K001132403

First published in Prodr. Fl. Nov. Holland.: 467 (1810)

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 Zambesiaca

  • Ngan in Ann. Miss. Bot. Gard. 52: 133 (1965) non Solander & Naudin (1852).
  • Pichon in Not. Syst. 14: 77 (1951).
  • in Mem. Wern. Soc. 1: 73 (1811).

Flora of Somalia

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

Flora of Tropical East Africa

  • Leeuwenberg in Wageningen Agric. Univ. Pap. 87, 5: 35–43 (1987)
  • R. Br. in Mém. Wern. Soc. 1: 73 (1811)

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

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