7940.000 Duosperma Dayton

DISPERMA C.B. Clarke

Leistner, O.A. (ed.) (2000) Seed plants of southern Africa: families and genera Strelitzia 10

Vollesen, K. (2006) A taxonomic revision of the genus Duosperma (Acanthaceae) Kew Bulletin 61(3) 289-351

Description of the genus

Perennial herbs or shrubs. Leaves (in ours) dentate. Inflorescences of axillary dichasial cymes. Bracts and bracteoles c. as long as calyx. Calyx lobes 5, ovate. Corolla 2-lipped; upper lip 3-lobed, transversely ribbed on the palate. Fertile stamens 4 ; anthers 2-thecous. Capsule with 1 seed in each loculus. Seeds borne on retinacula; with white hygroscopic hairs.

Derivation of name: from Latin duo meaning two and sperma a seed, referring to the 2-seeded fruits.

Worldwide: 26 species in tropical and southern Africa with one species extending into Yemen.

Tanzania: 0 taxa.

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Species

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Other sources of information about Duosperma:

Our websites:

Flora of Angola: Duosperma
Flora of Botswana: Duosperma
Flora of Caprivi: Duosperma
Flora of the DRC: Duosperma
Flora of Kenya: Duosperma
Flora of Malawi: Duosperma
Flora of Mozambique: Duosperma
Flora of Uganda: Duosperma
Flora of Zambia: Duosperma
Flora of Zimbabwe: Duosperma

External websites:

African Plants: A Photo Guide (Senckenberg): Duosperma
BHL (Biodiversity Heritage Library): Duosperma
EOL (Encyclopedia of Life): Duosperma
GBIF (Global Biodiversity Information Facility): Duosperma
Google: Web - Images - Scholar
iNaturalist: Duosperma
IPNI (International Plant Names Index): Duosperma
JSTOR Plant Science: Duosperma
Mansfeld World Database of Agricultural and Horticultural Crops: Duosperma
Plants of the World Online: Duosperma
Tropicos: Duosperma
Wikipedia: Duosperma