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This species is accepted, and its native range is SE. Kenya to Mozambique.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
Tree 5–12 m high, deciduous; branchlets densely pilose.
Morphology Leaves
Leaves petiolate; blade narrowly ovate or obovate, 3.5–14.5 cm long, 1–5.5 cm wide, puberulous above, tomentose beneath on the main veins; petiole 3–5 mm long, densely pilose.
Morphology Reproductive morphology Inflorescences
Inflorescence several-flowered, 4.5–6.5 cm long, pubescent on all parts; bracts 2.2–3 mm long, sometimes glabrous; peduncle 1–2 cm long; pedicels 7–15 mm long.
Morphology Reproductive morphology Flowers
Flowers with sepals green, 2–3 mm long, 1–2 mm wide; corolla yellow and violet or dark red, 13.5–20 mm long; tube 6–9 mm long; lobes 7.5–11 mm long, 4–6 mm wide, minutely pubescent outside, papillose inside; corona appendages bright yellow, 7, broomlike and filiform to truncate; stamens inserted 1.5–1.6 mm below the corolla mouth; pistil 8–9 mm long; style 6–8 mm long; ovules 120–150 in each carpel.
Morphology Reproductive morphology Fruits
Fruit dark green, follicles 20–30 cm long, 5–7 mm in diameter; seeds 10–18 mm long, greenish with a dense, 35 mm long tuft of hairs at the apex.
Figures
Fig. 25 (p. 72).
Habitat
Deciduous coastal thicket on sand; 300–750 m
Distribution
K7 T2 T6 T8

[FZ]

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

Morphology General Habit
Tree, 5–8 m. high; bark pale brown.
Morphology Branches
Branches pale to dark brown when dry; branchlets densely pilose.
Morphology Leaves
Leaves petiolate; petiole 3–5 mm. long, densely pilose; lamina narrowly ovate or obovate, 2·6–3·5 times as long as wide, 3·5–14·5 x 1–5·5 cm., subcoriaceous when dry, puberulous above, beneath tomentose especially on the main veins.
Morphology Reproductive morphology Inflorescences
Inflorescences several-flowered, 4·5-6·5 x 4–8·5 cm.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 2·2-3 mm. long, pubescent or glabrous on both surfaces.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncle 1–2 cm. long, tomentose, rarely subglabrous.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 7–15 mm. long, tomentose, rarely subglabrous.
Morphology Reproductive morphology Flowers Calyx
Sepals 1–1·7 times as long as wide, 2–3 x 1–2 mm., sparsely pubescent outside, glabrous inside with or without a colleter at the base near the edge.
Morphology General Colleters
Colleters (in whole flower 3–5) large, triangular, 2·5 times as long as wide, 1 x 0·4 mm.
Morphology Reproductive morphology Flowers Corolla
The set of appendages composed of 7 (the 1st and the 7th small, the 2nd and 3rd broom-like, the 4th, the central, much shorter, truncate and bearing three narrowly oblong lobes on the edges and in between the edges, the 5th and 6th again broom-like; the small ones oblong, 0·5–1·5 x 0·5 mm., ciliate, glabrous; the broom-like appendages long, filiform, 7–9 mm. long, glabrous, branched from 5–6 mm. above the base into 1–3 branches; the central one oblong, 2–3 x 0·3 mm., branched from 1·3-1·8 mm. above the base into 3 branches, sparsely pubescent). Corolla 6–7 times as long as the calyx, 13·5–20 mm. long; tube dark violet, 3–4 times as long as the calyx, 6–9 mm. long, at the ventricose part 2·5–4 mm. in diam., inside below the pilose zone glabrous; lobes yellow, brownish-violet at the apex, 1·2–1·8 times as long as the tube, 1·8–2 times as long as wide, 7·5–11 x 4–6 mm., minutely pubescent outside, papillose inside.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted 1·5–1·6 mm. below the mouth of the corolla; filaments 2·2–3 x 0·2 mm.; anthers 2·5–3·2 x 1 mm.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Pistil 8–9 mm. long; ovary 1–1·5 x 0·6–0·8 x 0·5–1 mm., glabrous; style 6–8 x 0·2–0·3 mm., glabrous; clavun-cula 0·8–1 x 0·9–1 mm.; stigma 0·2–0·3 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
Ovules 120–150 in each carpel.
Morphology Reproductive morphology Fruits
Fruit dark green; follicles 20–30 cm. long, 5–-7 mm. in diam.
Morphology Reproductive morphology Seeds
Seeds 10–18 x 1 x 0·2 mm., greenish, with a dense, 35 mm. long tuft of hairs at the apex.

Native to:

Kenya, Mozambique, Tanzania

Pleioceras orientale Vollesen appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2007 Luke et al. [9445], Kenya K000449305
Aug 7, 1979 Vollesen, K. [4783], Tanzania K000233804 isotype

First published in Bot. Tidsskr. 75: 59 (1980)

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 Tropical East Africa

  • Barink in Flora Zambesiaca 7 (2): 484, t. 114 (1985).
  • Barink in Meded. Landbouwhogeschool 83 (7): 37, t. 4 (1983)
  • Vollesen in Bot. Tidsskr. 75: 59 (1980).

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

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