| Family | Boraginaceae |
| Scientific name | Mertensia pterocarpa (Turczaninow) Tatewaki & Ohwi var. yezoensis Tatewaki & Ohwi |
| Synonyms | none |
| Common name | (Japanese common name) ezo-ruri-sou [Ezo lapis lazuli weed (Ezo = an old name of Hokkaido)] |
| (English common name) none | |
| Distribution | (Japan) Hokkaido |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Plants 15-40cm tall. Leaves 2.5-5cm long. Flowers blue or purple corollas 1-1.5cm long, flowering in July to August. Perennial plants. |
| Note | Endemic to Japan. Rare spexies. |
| May 2008 at my home |
May 2008 at my home |
May 2008 at my home |