Record Number
3319
PROSEA Handbook Number
1: Pulses
Taxon
Vigna dalzelliana (O. Kuntze) Verdc.
Protologue
Kew Bull. 24: 558 (1970).
Family
LEGUMINOSAE
Chromosome Numbers
2n = 22
Synonyms
Phaseolus pauciflorus Dalzell (1851), non G. Don (1832) nec Bentham (1837), Phaseolus dalzellianus O. Kuntze (1891), Phaseolus dalzellii Cooke (1902).
Vernacular Names
Indochina: a re (Lâm Dông), re bo nhui (Thuân Hai). India: mugavaine, mugavel, ranmug.
Origin and Geographic Distribution
The species is found in Thailand, Cambodia, Laos, Vietnam, the Philippines and India.
Uses
The seeds are used in the same way as green gram (Vigna radiata (L.) Wilczek). The whole plant is used as fodder and is excellent for soil conservation.
Botany
Slender climbing or creeping annual herb, 4—5 m long, with glabrescent stems, rooting at the nodes. Leaves trifoliolate, petiole 1—6 cm long; leaflets widely ovate, 2—5 cm x 1.5—3 cm, acuminate, entire or faintly lobed. Inflorescences in axillary racemes, 4—10 cm long, 2—5- flowered; bracteoles longer than the calyx; corolla 1 cm long, yellow. Pods subcylindrical, 3—5 cm x 0.3 cm, 4—10-seeded, flattened. Seeds reniform, 2—3 mm x 2 mm, brown.
In India flowering is in September—October, fruiting in October—November. Two varieties are distinguished: var. dalzelliana (leaflets ovate), and var. elongata Nguyên Van Thuân (leaflets linear to linear-lanceolate, in Indochina).
The species resembles much Vigna minima (Roxb.) Ohwi & Ohashi and Vigna umbellata (Thunb.) Ohwi & Ohashi var. gracilis (Prain) Mar. Masch. & Stain.
In India flowering is in September—October, fruiting in October—November. Two varieties are distinguished: var. dalzelliana (leaflets ovate), and var. elongata Nguyên Van Thuân (leaflets linear to linear-lanceolate, in Indochina).
The species resembles much Vigna minima (Roxb.) Ohwi & Ohashi and Vigna umbellata (Thunb.) Ohwi & Ohashi var. gracilis (Prain) Mar. Masch. & Stain.
Image
 | Vigna dalzelliana (O. Kuntze) Verdc. - 1, flowering branch; 2, fruiting branch |
Ecology
Var. dalzelliana occurs especially on burned places in forests, on black soils, up to 2000 m altitude in the tropics. Var. elongata occurs mainly in gorges on sandy soils.
Agronomy
Vigna dalzelliana is a plant growing in the wild as a component of the ground flora of monsoon forests.
Prospects
Vigna dalzelliana can be grown for purposes of soil conservation.
Literature
Babu, C.R., Sharma, S.K. & Johri, B.M., 1985. Leguminosae - Papilionoidae: Tribe - Phaseoleae. Bulletin of the botanical survey of India 27 (1-4): 14.
Nguyên Van Thuân, 1979. Flore du Cambodge, du Laos et du Viêt-Nam 17: 193-194.
Nguyên Van Thuân, 1979. Flore du Cambodge, du Laos et du Viêt-Nam 17: 193-194.
Author(s)
P.C.M. Jansen
Correct Citation of this Article
Jansen, P.C.M., 1989. Vigna dalzelliana (O. Kuntze) Verdc.. In: van der Maesen, L.J.G. & Somaatmadja, S. (Editors): Plant Resources of South-East Asia No 1: Pulses. PROSEA Foundation, Bogor, Indonesia. Database record: prota4u.org/prosea
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