Physostigma Balf.

Mackinder, B. et al. (2001) Papilionoideae Flora Zambesiaca 3(5)

Verdcourt, B. (2000) Papilionoideae Flora Zambesiaca 3(6)

Description of the genus

Herbs or subshrubs, erect or climbing. Leaves pinnately 3-foliolate; stipules persistent, not spurred, ribbed; stipels persistent. Inflorescences either axillary on leafy stems or appearing terminal on leafless shoots, pseudoracemose, many-flowered; rhachis sometimes swollen at the insertion of the pedicels. Flowers mostly showy, white to purple; calyx 5-lobed, 2-lipped, the lower 3 lobes ovate-triangular, the upper pair of lobes united to form an entire or bifid lip; standard auriculate but without appendages, glabrous; keel with marked basal spur, apex beaked, spirally twisted. Ovary linear, 2–12-ovuled. Fruit pods linear or linear-oblong, often curved, the valves sometimes twisting after dehiscence. Seeds large or small, ellipsoid or subcylindric; hilum linear or elliptic to ovate; aril absent.

Worldwide: Four or five species in tropical Africa.

Zambia: 1 taxon.

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Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsProvincesContent
mesoponticum Taub.N,W,C,E,SNw,N,E,C,S

Other sources of information about Physostigma:

Our websites:

Flora of Malawi: Physostigma
Flora of Mozambique: Physostigma

External websites:

ePIC (electronic Plant Information Center): Physostigma
Flora Zambesiaca web site: Physostigma
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Physostigma
Wikipedia: Physostigma
IPNI (International Plant Names Index): Physostigma
Kew Herbarium catalogue: Physostigma

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2023). Flora of Zambia: Genus page: Physostigma., retrieved 30 March 2023

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