672109 Draba "pseudo-oxycarpa" V.V. Petrovsky (ined.)
Distribution
Wrangel Island: Scattered
East Chukotka: Rare
Western Alaska: Rare
Northern Alaska - Yukon: Rare
Northern arctic Tundra: Rare
Mid Arctic Tundra: Scattered
Southern Arcti Tundra: Scattered
Shrub Tundra: Rare
Bordering boreal or alpine areas: Rare
- Draba alpina auct., non L. (1753).
2n=
64 (8x). - Far East (West Chukotka, Wrangel Island). - Four reports, all for D. alpina.
Geography: Amphi-Beringian: RFE ALA.
Notes: Petrovsky, Murray, and Elven: A taxon morphologically resembling Draba oxycarpa Sommerf. in several characters (including fruits with marginal hairs), and also in being octoploid, occurs in Beringia. It has erroneously been assigned to D. alpina in Asian Beringia as has a morphologically similar plant known from northwestern and northern Alaska (ALA; field 2002). Its relations to the amphi-Atlantic D. oxycarpa should be clarified, preferrably by molecular methods combined with morphology, before it is formally described and its rank decided. A connection between the amphi-Beringian D. "pseudo-oxycarpa" and the amphi-Atlantic D. oxycarpa through the Canadian Arctic is improbable as the major material from this area (CAN, DAO) has been revised. A connection through the Russian and Siberian Arctic can not be fully excluded but is improbable. We tentatively enter Draba "pseudo-oxycarpa" as a Beringian species but alternatives are as a subspecies or as a part of a yet unknown wider range of D. oxycarpa.
Higher Taxa
- Draba [6721,genus]