Vigna angularis (Willd.) Ohwi & H.Ohashi

Adzuki bean (en)

Species

Angiosperms > Fabales > Fabaceae > Vigna

Characteristics

Annual herbs, erect or twining, 30-90 cm tall. Stems angular, sparsely pilose. Stipules peltate, lanceolate, ca. 8 mm, point of attachment elongated; leaflets ovate or rhomboid-ovate, 5-10 × 5-8 cm, sparsely pilose on both surfaces, apex broadly triangular or subrounded, lateral leaflets oblique, entire or shal­lowly 3-lobed. Racemes axillary, 5-or 6-flowered, pedunculate. Calyx campanulate, 3-4 mm. Corolla yellow, ca. 15 mm; stan­dard oblate or subreniform, apex emarginate; wings broader than keel, shortly clawed and auriculate; keel apex incurved for nearly a half circle, base clawed. Ovary linear; style curved. Legumes terete, 5-8 × 0.5-0.6 cm, glabrous or almost so. Seeds dull red or with various other colors, oblong, 5-6 × 4-5 mm, truncate or subrounded at both ends; hilum not impressed. Fl. Jun-Jul, fr. Sep-Oct.
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An erect bushy bean plant. They are plants which re-grow from seed each year. Plants grow up to 60 cm tall. The flowers occur as clusters of bright yellow flowers. The fruit are pods 6-12 cm long. These contain up to 12 small oblong seeds. These can vary between red, brown and black. They are 0.5 cm long. There are several named cultivated varieties.
Life form annual
Growth form herb
Growth support climber
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 1.0
Mature height (meter) 0.68 - 0.78
Root system -
Rooting depth (meter) 1.5
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer
Photosynthetic pathway c3

Environment

A tropical plant. They cannot stand frost but can tolerate some cold. They are short day plants forming flowers and pods when daylengths or hours of sunlight are getting shorter.
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Not known in the wild
Light 4-9
Soil humidity 2-7
Soil texture 1-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

The young pods are eaten cooked. The seeds can be eaten cooked. They are added to soups, stews and salads. They are boiled, mashed and sweetened. The seeds are germinated for sprouts. They can be popped liked corn or used as a coffee substitute.
Uses animal food coffee substitute environmental use fodder food gene source green manure material medicinal
Edible pods seeds
Therapeutic use Antioxidants (seed), Beri-Beri (unspecified), Circulation (unspecified), Diuretic (unspecified), Dysentery (unspecified), Edema (unspecified), Suppurative (unspecified), Swelling (unspecified), Abscess (unspecified), Sore (unspecified), Antiphlogistic (unspecified), Fever (unspecified), Kidney (unspecified), Labor (unspecified), Miscarriage (unspecified), Lactogogue (unspecified), Boil (unspecified), Constipation (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Seed can be pre-germinated on wet paper to get it growing more quickly. The soil temperature needs to be above 15°C. A spacing of 15 cm is suitable.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) 15 - 30
Size -
Vigor -
Productivity -

Images

Vigna angularis unspecified picture

Distribution

Vigna angularis world distribution map, present in Brazil, China, India, Japan, Kenya, Nepal, Russian Federation, Seychelles, United States of America, and Viet Nam

Conservation status

Vigna angularis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:525291-1
WFO ID wfo-0000187878
COL ID 5BDLX
BDTFX ID -
INPN ID 844287
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Vigna angularis Phaseolus nipponensis Dolichos angularis Phaseolus atsuki Dolichos angulatus Phaseolus angularis Azukia angularis Vigna angularis var. angularis

Lower taxons

Vigna angularis var. nipponensis