- Family:
- Apocynaceae Juss.
Pleioceras Baill.

[FZ]
Apocynaceae, A. J. M. Leeuwenberg & F. K. Kupicha et al. Flora Zambesiaca 7:2. 1985
- Morphology General Habit
- Shrubs, lianas or trees up to 9 m. high, with white latex.
- Morphology Stem
- Branches unarmed, with pale lenticels; branchlets terete, often sulcate when dry.
- Morphology Leaves
- Leaves opposite, those of a pair equal or subequal, shortly petiolate, with colleters in one or two rows in the axils; lamina acuminate, rounded or cuneate at the base.
- Morphology Reproductive morphology Inflorescences
- Inflorescences terminal, paniculate, several- to many-flowered, lax. Lower bracts leafy; others narrowly oblong, acute, with colleters in the axils.
- Morphology Reproductive morphology Flowers
- Flowers actinomorphic except for the sometimes slightly unequal sepals, small.
- Morphology Reproductive morphology Flowers Calyx
- Calyx persistent beneath the fruit; sepals green, connate at the base, ovate, imbricate, entire, pubescent or glabrous outside, ciliate, inside at the base near the edge with 0–1 triangular or ovate colleters (in whole flower 3–10).
- Morphology Reproductive morphology Flowers Corolla
- Corolla subhypocrateriform; tube yellow and violet or dark-red, ventricose in the middle, outside glabrous at the base and minutely pubescent at the apex, inside at the apex just below the appendages with a narrow pilose zone; lobes yellow with a brownish-violet tinge, in the bud overlapping to the left, elliptic, rounded, entire, ciliate, minutely pubescent outside, with an alternating set of appendages inside. Appendages bright yellow, in a set of 1–3, shortly truncate or filiform, glabrous or pubescent, plus 2–4 long filiform glabrous ones.
- Morphology Reproductive morphology Flowers Androecium Stamens
- Stamens exserted, but covered by the appendages; filaments short, filiform, glabrous outside, inside hispid towards the apex and with a triangular swelling on the base of the connective; anthers introrse, sagittate at the base, apiculate and pilose at the apex, otherwise glabrous, fertile for y of the length just below the apices.
- Morphology Reproductive morphology Flowers Gynoecium Pistil
- Pistil glabrous or sometimes with a few papillae; ovary superior, subglobose; carpels two, free, rounded; disk none; style split at the base; clavuncula with a thin ring at the base, almost cylindrical, covered by the anthers and inside with the triangular swellings of the connectives adnate to the clavuncula; stigma minute, bilobed.
- Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
- Ovules numerous, in several rows.
- Morphology Reproductive morphology Fruits
- Follicles 2, spreading, almost free, pendulous, slender, adaxially dehiscent, glabrous; wall thinly coriaceous, striate, grooved when dry, glabrous outside.
- Morphology Reproductive morphology Seeds
- Seeds numerous, in two or more rows, linear to very narrowly oblong, finely grooved, glabrous, with a ± dense tuft of retrorse hairs at the apices, embryo large, surrounded by the very scanty whitish endosperm.
[FTEA]
Apocynaceae, E.A. Omino. Flora of Tropical East Africa. 2002
- Morphology General Habit
- Shrubs, lianas or trees with white latex in bark and leaves
- Morphology Leaves
- Leaves opposite, petiolate, with colleters in one or two rows in the axils
- Morphology Reproductive morphology Inflorescences
- Inflorescences terminal, paniculate, several- to many-flowered, lax
- Morphology Reproductive morphology Flowers
- Flowers 5-merous
- Morphology Reproductive morphology Flowers Calyx
- Sepals persistent in fruit, connate at the base, ciliate, with colleters within
- Morphology Reproductive morphology Flowers Corolla
- Corolla salver-shaped, ventricose at the middle; lobes contorted in bud, overlapping to the left, inside with 2 sets of appendages
- Morphology Reproductive morphology Flowers Androecium Stamens
- Stamens exserted, covered by appendages; filaments short, hispid towards the apex, with a triangular swelling on the base of the connective, adnate to the pistil head; anthers introrse, sagittate, apiculate, pilose at the apex, partly fertile
- Morphology Reproductive morphology Flowers Gynoecium Pistil
- Pistil glabrous, ovary superior, subglobose, 2-celled, cells free; disk absent; style split at the base; pistil head cylindrical with a thin ring at the base; stigma bifid; ovules numerous
- Morphology Reproductive morphology Fruits
- Fruits of 2 spreading almost free, pendulous, follicularmericarps, slender, dehiscent; pericarp thin, glabrous
- Morphology Reproductive morphology Seeds
- Seeds numerous, linear to oblong, with a dense tuft of hairs at the apex directed towards the base of the fruit; embryo large; cotyledons complicate.
Native to:
Angola, Benin, Cameroon, Congo, Gabon, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Mozambique, Nigeria, Sierra Leone, Tanzania, Zaïre
Pleioceras Baill. appears in other Kew resources:
First published in Bull. Mens. Soc. Linn. Paris 1: 759 (1888)
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: 165.
Flora Zambesiaca
- Hist. PI. 10: 210 (1889).
- in Bull. Soc. Linn., Paris 1: 759 (1888)
Flora of Tropical East Africa
- Barink in Meded. Landbouwhogeschool 83 (7): 26–42 (1983)
- Stapf in F.T.A. 4, 1: 165 (1902)
- in Bull. Soc. Linn. 1: 759 (1888)
-
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 2022. 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 2022. 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