| Potentilla borealis Soják | |
| Publ. & Syn. | Soják, Willdenowia 15: 167 (1985). Holotype (PR): Russian Far East: West Chukotka, "editum montanum Anyuyskoge, jugum Ilirniyskiy, systema lacus Tytyl", 19. Aug. 1980, leg. V.V. Petrovsky 80-233. |
| Notes | Potentilla borealis is assumed to be a hybrid species from P. anachoretica and P. arenosa subsp. arenosa. Alaskan occurrence, as proposed by Yurtsev (PAF proposal), has not been confirmed. Yurtsev: The hypothesis of hybrid origin should be tested. Ultrastructure data do not contradict the hybrid hypothesis though the characters of P. arenosa are better represented: petioles without wool with layer of shorter straight hairs under that of longer inclined ones. |
| Chromosomes | (1) 42 (6x). - Far East (South and West Chukotka). - Zhukova and Petrovsky (1985b, three counts). (2) 56 (8x). - Far East (West Chukotka). - Zhukova and Petrovsky (1985b, one count). |
| Geography | Asian Beringian: RFE. |
| Distribution | N = R C = ? D = R E = R WI = r CE = r CW = s [ key ] |
| Parent taxon | Potentilla L. |
| PAF ID | 641019 |