Fabaceae
Vigna

Vigna gracilicaulis (Ohwi) Ohwi & H.Ohashi

First published in J. Jap. Bot. 44: 30 (1969)
This species is accepted
The native range of this species is E. Himalaya to Indo-China. It is a scrambling annual and grows primarily in the subtropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

International Legume Database and Information Service

Morphology General Habit
Annual, Herb
[ILDIS]

Seed Collecting Guide. RBG Kew (2013-2016)

Morphology General Habit
A twining herb
Morphology Stem
Stems sparsely to densely covered with retrorse pale brown very fine hairs
Morphology Leaves Stipules
Stipules peltate, covered with fine hairs
Morphology Leaves Petiole
Petioles 4.3 - 9.2 cm long, sparsely covered with pale brown hairs
Morphology Leaves Leaflets
Leaflets covered with pale brown hairs on both surfaces; terminal leaflets narrowly ovate to ovate, 6.2 - 7.7 x 3.7 - 4.3cm; lateral leaflets obliquely ovate 5.4 - 6.4 x 3.7 - 4.2 cm, all leaflets acuminate at the apex, rounded at the base, sometimes faintly 3 lobed
Morphology Reproductive morphology Inflorescences
Axillary, 10 - 30 flowered
Morphology Reproductive morphology Flowers
Flowers golden yellow
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, 4.4 mm long, tube 3.0 mm long; standard asymmetrical, obliquely elliptic, 11.9 - 17.7mm, emarginate at the apex, with a prominent appendage at the centre inside
Morphology Reproductive morphology Flowers Corolla
Keel petals spirally incurved to the left
Morphology Reproductive morphology Fruits
Pendulous, linear, 4.6 - 7.1 x x0.2 - 0.4 cm, blackish brown when mature, glabrous, 6 - 10 seeded
Morphology Reproductive morphology Seeds
Elliptic, 4.4 x 2.6 x 2.2 mm, smooth surface; hilum elliptic, 2.5 x x1.0 mm, protruding, aril well developed.
Ecology
Grows in disturbed habitat such as roadsides, beside paddy-fields and near streams. Sometimes makes very large populations.
Distribution
China, Japan, Taiwan, Philippines, Vietnam.
Conservation
Near endangered
Phenology
Flower (October - November), fruit (October - November)
[SCG]

International Legume Database and Information Service

Morphology General Habit
Annual, Climbing/Not climbing, Herb
[ILDIS]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • International Legume Database and Information Service

    • International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    • http://creativecommons.org/licenses/by/3.0

  • 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

  • Seed Collection Guides

    • Seed Collection Guides
    • 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