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This genus is accepted, and its native range is Mexico to Tropical America.
A specimen from Kew's Herbarium

[FZ]

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

Morphology General Habit
Herbaceous or woody climbers or trailers.
Morphology Leaves
Leaves pinnately 3-foliolate; stipels present.
Morphology Reproductive morphology Flowers
Flowers blue or violet, small, in fascicles arranged in short to long axillary nodose pseudoracemes, or in axillary subsessile fascicles; bracts and bracteoles small, deciduous.
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate or shortly tubular, 5-lobed, the upper pair free or ± connate to form a 2-toothed lip.
Morphology Reproductive morphology Flowers Corolla
Standard obovate, auriculate at the base, the auricles inflexed; wings narrow, adhering to the obtuse keel.
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary stamen free; anthers mostly 8–9, all similar.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary sessile, many-ovuled; style filiform or subulate, usually ± incurved, glabrous or pubescent; stigma terminal, capitate.
Morphology Reproductive morphology Fruits
Pods linear or linear-oblong, ± compressed, 2-valved, dehiscent, mostly septate between the seeds, the outer surface transversely furrowed, giving the pod the appearance that it might break into segments.
Morphology Reproductive morphology Seeds
Seeds compressed-globose or oblong.

[FTEA]

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

Morphology General Habit
Herbaceous or woody climbers or trailers
Morphology Leaves
Leaves pinnately 3-foliolate; stipels present
Morphology Reproductive morphology Flowers
Flowers blue or violet, small, in fascicles arranged in short to long axillary nodose pseudo-racemes, or in axillary subsessile fascicles; bracts and bracteoles small, deciduous
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate or shortly tubular, 5-lobed, the upper pair free or ± connate to form a 2-toothed lip
Morphology Reproductive morphology Flowers Corolla
Standard obovate, auriculate at the base, the auricles inflexed; wings narrow, adhering to the obtuse keel
Morphology Reproductive morphology Flowers Androecium Stamens
Vexillary stamen free; anthers mostly 8–9, all similar
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary sessile, many-ovuled; style filiform or subulate, usually ± incurved, glabrous or pubescent; stigma terminal, capitate
Morphology Reproductive morphology Fruits
Pods linear or linear-oblong, ± compressed, 2-valved, dehiscent, mostly septate between the seeds, the outer surface transversely furrowed, giving the pod the appearance that it might break into segments
Morphology Reproductive morphology Seeds
Seeds compressed-globose or oblong.

[LOWO]

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

Habit
Herbs or scandent subshrubs
Ecology
Seasonally dry tropical and subtropical forest, woodland or thicket, often on margins, usually near rivers or swamps, or in bushland, shrubland and disturbed grassy areas
Distribution
America (Mexico, C America and Caribbean to Paraguay and Argentina). 1 sp. widely introduced in the Palaeotropics
Note
Calopogonium and Pachyrhizus were traditionally placed in the Diocleinae, but molecular evidence (Bruneau et al., 1995; Doyle et al., 2000) puts these genera in the Glycininae; Lee & Hymowitz (2001) place Calopogonium sister to Cologania, while Doyle et al. (2003) resolved Calopogonium as sister to Neonotonia and Teyleria, and these three as sister to Cologania

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]
Use
Used as fodder and cover crops; C. mucunoides Desv. is widely used as a green manure; also a weedy escape

Native to:

Argentina Northeast, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Suriname, Trinidad-Tobago, Venezuela, Windward Is.

Introduced into:

Andaman Is., Angola, Bangladesh, Benin, Bismarck Archipelago, Borneo, Burkina, Burundi, Cambodia, Cameroon, Caroline Is., Central African Repu, Chad, Chagos Archipelago, China South-Central, China Southeast, Christmas I., Congo, Cook Is., Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Hainan, India, Ivory Coast, Jawa, Kazan-retto, Kenya, Laos, Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Maluku, Marianas, Nauru, Nepal, New Caledonia, New Guinea, Nigeria, Northern Territory, Philippines, Queensland, Senegal, Seychelles, Sierra Leone, Solomon Is., Sri Lanka, Sulawesi, Taiwan, Tanzania, Togo, Uganda, Vietnam, Zaïre

Calopogonium Desv. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Glaziou [8641], Brazil K000931112
Kanu, K.M.T. et al. [9], Sierra Leone K000023472

First published in Ann. Sci. Nat. (Paris) 9: 423 (1826)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

Literature

Flora of West Tropical Africa

  • in Ann. Sci. Nat., sér. 1, 9: 423 (1826).

Flora Zambesiaca

  • in Ann. Sci. Nat., Paris 9: 423 (1826).

Flora of Tropical East Africa

  • in Ann. Sci. Nat., sér. 1, 9: 423 (1826)

Flora Zambesiaca
Flora Zambesiaca
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Flora of Tropical East Africa
Flora of Tropical East Africa
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Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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

Legumes of the World Online
http://creativecommons.org/licenses/by-nc-sa/3.0