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This species is accepted, and its native range is SW. Tanzania to NW. Zambia.

[FTEA]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Erect perennial herb with short napiform tuber.
Morphology Stem
Stems one or two, ± 35 cm tall, pubescent with short curled hairs
Morphology Leaves
Leaves subsessile to shortly petiolate; petiole to ± 0.3 cm long; lamina narrowly oblong to oblanceolate, 2.5–6 × 0.6–1.3 cm, apex obtuse to subacute, tapering gradually at the base; veins prominent, reticulate, glabrous except for occasional hairs on the marginal vein
Morphology Reproductive morphology Inflorescences
Umbels sessile, extra-axillary, with 5–9 flowers at each of the middle and upper nodes.
Morphology Reproductive morphology Inflorescences Bracts
Bracts linear, 2–4 mm long, acute, pubescent.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 5–8 mm long, pubescent
Morphology Reproductive morphology Flowers Calyx
Calyx lobes ovate, ± 2.5 × 1 mm, acute, pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla green tinged with purple, campanulate, lobed almost to the base; lobes ovate, 5 × 2 mm, acute, pubescent with scattered hairs on lower surface, upper surface minutely papillate especially towards the base
Morphology Reproductive morphology Flowers Corona
Corona lobes green, reaching ± to the base of the anthers, fleshy but somewhat flattened dorsally, spreading outwards from the base of the staminal column for ± 0.5 mm then becoming erect for ± 2 mm, the outer face obovate, rounded at the apex, thickened in the upper half, sometimes toothed at the basal end of the thickening
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium ± 2.5 mm tall
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments forming an obconic stipe,
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Widest point of anther wings ± 0.5 mm from the top of the column, narrowing gradually below into the stipe; appendages ovate, ± 1 × 0.7 mm, acute, inflexed over the stylar head; corpusculum black, ovoid, 0.4 × 0.3 mm; translator arms ± 0.3 × 0.1 mm, slightly contorted and differentially thickened.
Morphology Reproductive morphology Flowers Pollinia
Pollinia triangular, 0.6 × 0.3 mm, widest around the middle
Morphology Reproductive morphology Flowers Gynoecium Style
Apex of stylar head flat, ± level with the anther tips
Morphology Reproductive morphology Fruits
Follicles not seen.
Ecology
Brachystegia woodland; ± 1500 m
Note
The type differs slightly from other material in the attitude of the basal part of the corona lobes, which is more erect, and the upper part, which is held in a more horizontal position than in other collections of this species.
Distribution
Flora districts: T7 Range: S Congo-Kinshasa and NW Zambia

Native to:

Tanzania, Zambia, Zaïre

Xysmalobium patulum S.Moore appears in other Kew resources:

First published in J. Bot. 47: 215 (1909)

Accepted by

  • Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Flora Zambesiaca 7(3): 1-375. Royal Botanic Gardens, Kew.
  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.

Literature

Kew Backbone Distributions

  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.

Flora of Tropical East Africa

  • J.B. 47: 215 (1909).

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