Fabaceae

Pseudoeriosema Hauman

First published in Bull. Jard. Bot. État Bruxelles 25: 96 (1955)
This genus is accepted
The native range of this genus is Tropical Africa.

Descriptions

Legumes of the World. Edited by G. Lewis, B. Schrire, B. MacKinder & M. Lock. Royal Botanic Gardens, Kew. (2005)

Note

Previous accounts of the Phaseoleae by Baudet (1978) and Lackey (1981) recognised 90 and 84 genera and c. 1540 and 1480 species respectively in the tribe. In an equivalent, i.e. traditionally held view of Phaseoleae, 89 genera and (1554)–1567–(1580) species are treated here (Table 9; Fig. 47). Changes between Baudet (1978) and this treatment are that eleven genera are now in synonymy or have subsequently been placed in Millettieae, two genera have been transferred from Desmodieae and eight new genera have been added. Vigna has traditionally been thought to comprise some 150–200 species, but Vigna sens. strict. may contain fewer than 100.

Recent molecular analyses of the tribe, however, have emphasised both the polyphyletic and paraphyletic nature of Phaseoleae as traditionally circumscribed (Bruneau & Doyle, 1990; Doyle & Doyle, 1993; Delgado Salinas et al., 1993; Bruneau et al., 1995; Doyle et al., 1997, 2000; Kajita et al., 2001; Goel et al., 2001; Lee & Hymowitz, 2001). This has required a radical realignment of elements of the phaseoloids (Table 9; Fig. 47), with at least two major clades being evident: Phaseoleae subtribes Diocleinae and Ophrestiinae which together with tribe Abreae are allied to the core-Millettieae (Fig. 45), and the remaining groups comprising a Phaseoleae sens. lat. clade. The rbcL phylogeny of Kajita et al. (2001) and the ITS analysis of Hu et al. (2002) are equivocal as to which clade subtribe Clitoriinae belongs. Phaseoleae sens. lat. also includes two traditionally independent tribes, the Desmodieae and Psoraleeae. Delimiting a recircumscribed Phaseoleae sens. strict is thus very problematic. A solution may be to recognise a broad tribe Phaseoleae, comprising the subtribes Kennediinae, Cajaninae, Phaseolinae and Glycininae, assorted basally branching genera, and tribes Desmodieae and Psoraleeae (both treated at subtribal level).

Included in subtribe Ophrestiinae; two of the widespread species each have two subspecies
Habit
Herbs or shrubs
Ecology
Seasonally dry tropical woodland to wooded grassland and seasonally swampy grassland
Distribution
Africa (mostly Zambezian and Sudanian to Somalia-Masai regions)
[LOWO]

Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Herbs or weak subshrubs, erect or ± trailing
Morphology Stem
Stems covered with long white hairs
Morphology Leaves
Leaves unifoliolate or pinnately 3-foliolate; stipules and usually stipels present
Morphology Reproductive morphology Inflorescences
Inflorescences axillary or terminal, racemose or condensed and paniculate; bracts mostly persistent
Morphology Reproductive morphology Flowers Calyx
Calyx 5-lobed, the upper pair ± joined
Morphology Reproductive morphology Flowers Corolla
Standard obovate-oblong, the lamina slightly produced on either side of the claw but not truly auriculate, hairy Corolla small, scarcely exceeding the calyx
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary filament free from others, somewhat enlarged and membranous; anthers uniform
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-ovuled, velvety; style short, subulate, bent, thickened below, glabrous at the apex; stigma capitate, glabrous
Morphology Reproductive morphology Fruits
Pod oblong-ovoid, compressed, densely villous
Morphology Reproductive morphology Seeds
Seeds oblong; hilum small and central; funicle dilated at the apex.
[FTEA]

Leguminosae, B. Mackinder, R. Pasquet, R. Polhill & B. Verdcourt. Flora Zambesiaca 3:5. 2001

Morphology General Habit
Herbs or weak subshrubs, erect or ± trailing.
Morphology Stem
Stems covered with long white hairs.
Morphology Leaves
Leaves 1-foliolate or pinnately 3-foliolate; stipules and usually stipels present.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary or terminal, racemose or condensed and paniculate; bracts mostly persistent.
Morphology Reproductive morphology Flowers Calyx
Calyx 5-lobed, the upper pair ± joined.
Morphology Reproductive morphology Flowers Corolla
Corolla small, scarcely exceeding the calyx. Standard obovate-oblong, the lamina slightly produced on either side of the claw but not truly auriculate, hairy.
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary filament free from others, somewhat enlarged and membranous; anthers uniform.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-ovuled, velvety; style short, subulate, bent, thickened below, glabrous at the apex; stigma capitate, glabrous.
Morphology Reproductive morphology Fruits
Pod oblong-ovoid, compressed, densely villous.
Morphology Reproductive morphology Seeds
Seeds oblong; hilum small and central; funicle dilated at the apex.
[FZ]

Uses

Use
Used as human food (roots)
[LOWO]

Sources

  • 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 Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Legumes of the World Online

    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • World Checklist of Vascular plants (WCVP)

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0