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This genus is accepted, and its native range is Kenya to Mozambique, W. Indian Ocean.
Mascarenhasia arborescens

[FTEA]

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

Morphology General Habit
Shrubs or trees, mostly with white latex in all parts; branchlets terete
Morphology Leaves
Leaves opposite, sometimes deciduous; ochreae not or slightly widened into intrapetiolar stipules
Morphology Reproductive morphology Inflorescences
Inflorescence axillary and/or terminal; peduncle subsessile; bracts sepal-like, persistent
Morphology Reproductive morphology Flowers
Flowers fragrant or not
Morphology Reproductive morphology Flowers Calyx
Sepals free
Morphology Reproductive morphology Flowers Corolla
Corolla tube cylindrical in the lower part, abruptly widening just below the insertion of the stamens into a campanulate or narrowly urceolate apical part; lobes free to halfway connate, overlapping to the right
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included, barely exserted; anthers with pubescent connective, coherent with a circular patch with pistil head
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary of 2 separate carpels; disk present, 5–parted
Morphology Reproductive morphology Fruits
Fruit of 2 linear cylindrical follicles, abaxially and longitudinally dehiscent; seeds dark brown, with a coma longer than the grain, directed towards the apex of the follicle.

[FZ]

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

Morphology General Habit
Shrubs or small trees with milky latex.
Morphology General Spines
Spines and tendrils absent.
Morphology Leaves
Leaves opposite, exstipulate, without domatia, with petiolar glands.
Morphology Reproductive morphology Flowers
Flowers often large and conspicuous, solitary or in few-flowered fasciculate cymes, terminal.
Morphology Reproductive morphology Flowers Calyx
Calyx lobes imbricate, free to base, with many glandular scales inside at the base.
Morphology Reproductive morphology Flowers Corolla
Corolla hypocrateriform; tube divided into two distinct regions of varying shape and proportions; lobes 5, with induplicate aestivation, straight in bud or twisted to the right.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5, sessile, inserted at the base of the upper region of the corolla tube; anthers conniving in a cone round the gynoecium, polliniferous in upper part only, joined to the clavuncle by a retinacle.
Morphology Reproductive morphology Flowers Receptacle
Receptacular disc cupular or represented by separate oppositipetalous scales, these sometimes united in pairs.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary of 2 free multiovulate carpels, glabrous or hairy; style pubescent; clavuncle swollen; stigma pointed or flared at apex, not bifid.
Morphology Reproductive morphology Fruits
Fruit of 2 follicular mericarps.
Morphology Reproductive morphology Seeds
Seeds linear-compressed with an apical coma; endosperm absent.

Native to:

Comoros, Kenya, Madagascar, Malawi, Mozambique, Tanzania, Zaïre, Zimbabwe

Introduced into:

Seychelles

Mascarenhasia A.DC. appears in other Kew resources:

First published in A.P.de Candolle, Prodr. 8: 487 (1844)

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

  • —F.T.A. 4, 1: 193 (1902).

Flora Zambesiaca

  • Pichon in Mém. Inst. Sci. Madag., Sér. B, 2: 76 (1949).
  • in DC., Prodr. 8: 487 (1844).

Flora of Tropical East Africa

  • Leeuwenberg in Wageningen Agric. Univ. Pap. 97, 2: 21–52 (1997)
  • Prodr. 8: 487 (1844)

Flora Zambesiaca
Flora Zambesiaca
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