| Physaria (Nutt. ex Torr. & A. Gray) A. Gray | |
| Publ. & Syn. | Lesquerella S. Watson, Proc. Amer. Acad. Arts 23: 249 (1888). |
| Notes | Murray and Elven: A thorough survey of the genus Lesquerella is Rollins and Shaw (1973). Al-Shehbaz and O'Kane (2002) showed by molecular evidence that Lesquerella should be merged with the southwestern North American genus Physaria under the latter priority name. The case was further argued for by O'Kane (2010). Mulligan commented some years ago that this merger has not been accepted by all but it is increasingly becoming established in the literature. We therefore accept Physaria in preference of Lesquerella for the two species that reach the Arctic. |
| Chromosomes | (1) 16 (2x). - Siberia, Far East (N). - At least five reports. (2) 30 32 (4x). - Siberia (N), Far East (N), Alaska. - Several reports. |
| Geography | Asian (N/C) - amphi-Beringian: RUS SIB RFE ALA CAN. |
| Parent taxon | Brassicaceae |
| Child taxa |
Physaria arctica (Wormsk. ex Hornem.) O'Kane & Al-Shehbaz Physaria calderi (G.A. Mulligan & A.E. Porsild) O'Kane & Al-Shehbaz |
| PAF ID | 6720 |