| Family | Brassicaceae |
| Scientific name | Arabis serrata Franchet & Savatier var. japonica (H. Boissieu) Ohwi |
| Synonyms | Arabis amplexicaulis Edgeworth var. japonica H. Boissieu; Arabis boissieuana Nakai |
| Common name | (Japanese common name) iwa hata-zao (イワハタザオ, 岩旗竿 [meaning: rocks flag pole]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (north of Central region) |
| (Other nations) none | |
| Habitat | Mountane rocks |
| Chromosomal number | 2n=32 |
| Description | Plants electing 15-45cm tall. Leaves 2-5cm long. Flowers white ca. 1.5-2cm across, flowering in April to June. Perennial plants. |
| Reference | Arabis serrata var. japonica (Boissieu) Ohwi |
| Arabis serrata Franchet & Savatier |
| April 2009 at mountane streamside |
April 2009 at mountane streamside |
| April 2009 at mountane streamside |
| April 2009 at mountane streamside |