641049 Potentilla rubella T.J. Sørensen
Distribution
Taimyr - Severnaya Zemlya: Scattered
Anabar - Onenyo: Rare
Kharaulakh: Rare
West Chukotka: Scattered
South Chukotka: Rare
Eastern Greenland: Rare
Mid Arctic Tundra: Rare
Southern Arcti Tundra: Rare
Shrub Tundra: Rare
2n=
(1) 28 (4x). - Far East (West Chukotka). - Zhukova and Petrovsky (1985b, three counts).
(2) 42 (6x). - Far East (West Chukotka). - Zhukova and Petrovsky (1985b, two counts).
Geography: Asian (NE) & North American (Greenlandic, E): SIB RFE GRL.
Notes: Yurtsev and Elven: Potentilla rubella is almost certainly a hybrid species developed several times from inter-sectional crosses between P. hyparctica s. lat. and P. stipularis, independently in Greenland, West and South Chukotka, and northern and northeastern Siberia. At least the plants in Greenland, West Chukotka, and Taimyr have a documented range and an independence that justify a taxon. The Greenland and the Asian plants (these last-mentioned ones first described as P. rubelloides and stated to differ from P. rubella in "foliis plerumque 7-foliolatis et floribus minoribus") should be critically compared. The reported chromosome counts are partly typical of one of the proposed parents (P. stipularis 2n = 28), partly of the other (P. hyparctica mainly 2n = 42). A thorough investigation of this species could support important information for decisions as to what should constitute a taxonomically recognizable hybrid species in Potentilla.
Higher Taxa
- Potentilla [6410,genus]