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| April 2007 at open field |
April 2007 at open field |
April 2007 at open field |
| Scientific name | Vicia tetrasperma (L.) Schreber |
| Subfamily | Faboideae |
| Tribe | Fabeae |
| Synonyms | Ervilia tetrasperma (L.) Opiz; Ervum tetraspermum L.; Vicia gemella Crantz; Vicia tetrasperma (L.) Schreber var. gracilis (Loiseleur-Deslongchamps) Ascherson & Graebner; Vicia tetrasperma (L.) Schreber var. tenuissima Druce |
| Common name | (Japanese common name) kasu-ma-gusa (カスマグサ, カス間草 [meaning: weed between Ka and Su (Ka = karasu-no-endou = Vicia sepium L., Su = suzume-no-endou = Vicia hirsuta (L.) S. F. Gray)]) |
| (English common name) sparrow vetch, slender vetch | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Eurasia, Northern Africa | |
| Habitat | Field, roadside |
| Chromosomal number | 2n=14 |
| Description | Plants 30-60cm tall. Leaves 8-15 leaflets, each 12-17mm long, 2-4mm wide. Flowers purple 5-7mm long, flowering in April to May. Fruits 10-13mm long, non hair. Winter annual plants. |
| Reference | Vicia tetrasperma (L.) Schreb. |
| Vicia tetrasperma (L.) Schreb. | |
| Method of isolating soyasaponins (US Patent 4594412/1986) |
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| April 2007 at open field |
April 2007 at open field |
April 2007 at open field |
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| April 2007 at open field |
