Cowpea Vigna unguiculata, copyright Harry Rose.

Belongs within: Phaseolinae.

Vigna is a pantropical genus of twining or erect herbaceous legumes, a number of which are cultivated as food plants. Notable members include the mung bean V. radiata which has yellow flowers, often partially tinged with pink, and hispid stems and legumes with brown hairs.

Characters (from Flora of China): Twining or erect herbs, rarely subshrubs. Leaves pinnately 3-foliolate; stipules peltate or basally spurred, 2-lobed, cordate, or truncate. Racemes axillary or terminal, nodes of rachis often thickened and glandular. Bracts and bracteoles deciduous. Calyx 5-toothed, 2-lipped. Corolla yellow, blue, or purple; standard suborbicular, base appendaged; wings shorter than standard; keel subequal to wings, incurved, not beaked or produced into an incurved or spirally twisted beak. Stamens diadelphous; anthers uniform. Ovary sessile; style filiform, upper part thickened, bearded or hirsute lengthwise inside; stigma oblique. Legumes linear or linear-oblong, terete or flat. Seeds reniform or subquadrate; hilum short or elongate, with or without aril.

    |--V. aconitifolia PP07
    |--V. angularis T91
    |--V. dalzelliana SR07
    |--V. lanceolata B12
    |    |--V. l. var. lanceolata B12
    |    `--V. l. var. filiformis B12
    |--V. luteola B00
    |--V. marinas M99
    |--V. radiata KJ94
    |    |--V. r. var. radiata LK14
    |    |--V. r. var. setulosa LK14
    |    `--V. r. var. sublobata LK14
    |--V. sesquipedales M99 [=V. unguiculata ssp. sesquipedalis BMM99]
    |--V. sinensis B88
    |--V. trilobata PP07
    |--V. unguiculata CP13
    `--V. vexillata LK14
         |--V. v. var. vexillata LK14
         `--V. v. var. angustifolia LK14

*Type species of generic name indicated


[B88] Bouček, Z. 1988. Australasian Chalcidoidea (Hymenoptera): A biosystematic revision of genera of fourteen families, with a reclassification of species. CAB International: Wallingford (UK).

[B00] Braby, M. F. 2000. Butterflies of Australia: their identification, biology and distribution vol. 2. CSIRO Publishing: Collingwood (Victoria).

[B12] Braby, M. F. 2012. The butterflies of El Questro Wilderness Park, with remarks on the taxonomy of the Kimberley fauna, Australia. Records of the Western Australian Museum 27 (2): 161–175.

[BMM99] Braun, U., J. Mouchacca & E. H. C. McKenzie. 1999. Cercosporoid hyphomycetes from New Caledonia and some other South Pacific islands. New Zealand Journal of Botany 37: 297–327.

[CP13] Cardoso, D., R. T. Pennington, L. P. de Queiroz, J. S. Boatwright, B.-E. Van Wyk, M. F. Wojciechowski & M. Lavin. 2013. Reconstructing the deep-branching relationships of the papilionoid legumes. South African Journal of Botany 89: 58–75.

[KJ94] Kim, K.-J., & R. K. Jansen. 1994. Comparisons of phylogenetic hypotheses among different data sets in dwarf dandelions (Krigia, Asteraceae): additional information from internal transcribed spacer sequences of nuclear ribosomal DNA. Plant Systematics and Evolution 190: 157–185.

[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.

[M99] Matthews, M. 1999. Heliothine Moths of Australia: A guide to bollworms and related noctuid groups. CSIRO Publishing.

[PP07] Pandey, R. P.. & P. M. Padhye. 2007. Studies on phytodiversity of Arid Machia Safari Park-Kailana in Jodhpur (Rajasthan). Bulletin of the Botanical Survey of India 49: 15–78.

[SR07] Sankar, R. V., K. Ravikumar, N. M. Ganesh Babu & D. K. Ved. 2007. Botany of Anapady MPCA, Palghat district, Kerala with special emphasis on species of conservation concern. Bulletin of the Botanical Survey of India 49: 165–172.

[T91] Tanigoshi, L. K. 1991. Tetranychus urticae Koch: its control and impact on azuki bean culture in eastern Washington. In: Dusbábek, F., & V. Bukva (eds) Modern Acarology: Proceedings of the VIII International Congress of Acarology, held in České Budĕjovice, Czechoslovakia, 6–11 August 1990 vol. 2 pp. 737–740. SPB Academic Publishing: The Hague.

Last updated: 20 September 2020.

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