Fabaceae

Dumasia DC.

First published in Ann. Sci. Nat. (Paris) 4: 96 (1825)
This genus is accepted
The native range of this genus is Tropical & Subtropical Old World.

Descriptions

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

Habit
Climbing herbs
Ecology
Mostly seasonally dry tropical to warm temperate upland forest, forest margins and riverine secondary growth
Distribution
Asia (Indian subcontinent, Myanmar [Burma], China, Korea, Japan); 1 sp. widespread in tropical and subtropical Asia, Africa and Indian Ocean
Note
Basally branching in subtribe Glycininae (Doyle & Doyle, 1993; Lee & Hymowitz, 2001), while Doyle et al. (2003) place Dumasia as basally branching in a Dumasia -Glycine clade which is sister to a Calopogonium-Cologania-Neonotonia clade

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).

[LOWO]

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

Morphology General Habit
Climbing herbs
Morphology Leaves
Leaves pinnately 3-foliolate; stipules and stipels present
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, racemose, several-many-flowered
Morphology Reproductive morphology Flowers Calyx
Calyx-tube cylindrical, basally somewhat swollen at the back, the mouth obliquely truncate; lobes almost obsolete
Morphology Reproductive morphology Flowers Corolla
Corolla small; standard elliptic-oblong, auriculate, glabrous; all petals with long claws
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary stamen free; anthers uniform
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary slightly stalked, 4-many-ovuled; style filiform, hairy below, dilated and hollow near the middle, apical part cylindrical, somewhat stiffened, not bearded; stigma terminal
Morphology Reproductive morphology Fruits
Pods linear, compressed, constricted between the seeds but not septate
Morphology Reproductive morphology Seeds
Seeds blue or black, sub-globose; hilum short, central; aril not developed.
[FTEA]

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

Morphology General Habit
Trailing or climbing herbs.
Morphology Leaves
Leaves pinnately 3-foliolate; stipules and stipels present.
Morphology Reproductive morphology Flowers
Flowers several–many in axillary racemes.
Morphology Reproductive morphology Flowers Calyx
Calyx truncate, the individual lobes scarcely evident.
Morphology Reproductive morphology Flowers Corolla
Corolla yellow, small; standard elliptic-oblong, clawed, glabrous; wings and keel with claws longer than the blade.
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary filament free.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary shortly stipitate, 4–many-ovuled; styles bearded at the base, geniculate, widening slightly towards the bend with a terminal stigma.
Morphology Reproductive morphology Fruits
Pod linear, compressed, dehiscent, appearing septate due to constrictions of the pod.
Morphology Reproductive morphology Seeds
Seeds blue or black, smooth, subglobose to ovoid, with a short central hilum.
[FZ]

Uses

Use
Seeds used as beads
[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

  • Herbarium Catalogue Specimens

  • 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