| Family | Brassicaceae |
| Scientific name | Arabis hirsuta (L.) Scopoli |
| Synonyms | Arabis hirsuta (L.) Scopoli subsp. nipponica Kitamura; Arabis hirsuta (L.) Scopoli var. nipponica (Franchet & Savatier) C. C. Yuan & T. Y. Cheo; Arabis hirsuta (L.) Scopoli var. purpurea Y. C. Lan & T. Y. Cheo; Arabis sagittata de Candolle var. nipponica Franchet & Savatier; Turritis hirsuta L. |
| Common name | (Japanese common name) yama hata-zao (ヤマハタザオ, 山旗竿 [meaning: mountain flag pole]) |
| (English common name) hairy rockcress | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, Korea, China, Caucasus, Kazakhstan, Iran, Iraq, Turkey, Europe, Canada, USA | |
| Habitat | Mountane field or forest edge |
| Chromosomal number | 2n=32 |
| Description | Plants electing 30-80cm tall. Leaves 2-5cm long, 1-2.5cm wide. Flowers white petals 4-6mm long, flowering in May to July. Perennial plants. |
| Reference | Arabis hirsuta (L.) Scop. |
| Arabis hirsuta (Linnaeus) Scopoli |
| May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
| May 2007 at Mt. Tsukuba |