| Family | Fabaceae (alt. Leguminosae) |
| Subfamily | Faboideae |
| Tribe | Galegeae |
| Subtribe | Astragalinae |
| Scientific name | Oxytropis nigrescens (Pallas) Fischer ex de Candolle var. sericea (Koidzumi) Schimizu |
| Synonyms | Oxytropis japonica Maximovicz var. sericea Koidzumi; Oxytropis yezoensis Nakai |
| Common name | (Japanese common name) ezo oyama-no-endo (エゾオヤマノエンドウ, 蝦夷御山豌豆 [meaning: Ezo mountain bean weed (Ezo = an old name of Hokkaido)]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido (Taisetsu Mountains, Rebun Island) |
| (Other nations) none | |
| Habitat | Alpone rocks |
| Chromosomal number | unknown |
| Description | Plants 5-10cm long. Flowers purple (or merely white) ca. 2cm long, flowering in June to July. Perennial plants. |
| Reference | Oxytropis nigrescens (Pall.) Fisch. ex DC. |
| Note | Endemic to Japan. |
| May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |