| Draba taimyrensis Tolm. | |
| Publ. & Syn. | Tolm., Fl. Arct. URSS 7: 135 (1975). Holotype (LE!): Siberia: Taimyr, "ad sinum JamuBaikura lacu Taimyrensi", 12. Aug. 1947, leg M.I. Wellikainen. |
| Notes | Petrovsky and Elven: Draba taimyrensis has a certain range in the Taimyr Peninsula (Tolmachev 1975b). The material studied (LE) varies among populations in pubescence of leaves, fruits, and pedicels. Some plants combine characters of D. lactea and D. parvisiliquosa. The following characters keep it together: leaves narrow with a broad and thick, marcescent midvein, with marginal cilia and with long-stalked dendritic hairs on the surface (long-stalked hairs are absent in both D. lactea and the D. cinerea group where D. parvisiliquosa should belong); scapes with short simple or branched hairs and without or more often with 1-2 leaves (such leaves are very rare in D. lactea but common in the D. cinerea group); infrutescence short with fairly few fruits; and fruits narrow, comparatively small, and with some short simple and few-branched hairs (glabrous in D. lactea). Draba taimyrensis is provisionally accepted. Another hypothesis is that it could be a local, fertile hybrid swarm. |
| Chromosomes | (1) 32 (4x). - Siberia (N), Far East (N), Alaska, Greenland. - Three reports, partly for D. pseudopilosa (Siberia, Far East). Tetraploid in FCM, Grundt et al. (2005b; western Alaska, Greenland). (2) 48 (6x). - Europe (N), Siberia (N), Far East (N), Alaska, Canada, Greenland. - Numerous reports, partly for D. pseudopilosa. Hexaploid in FCM, Grundt et al. (2005b; Norway, Svalbard, Siberia, Alaska, Canada, Greenland). Not included: A report of 2n = 16 (2x) from central Alaska (Dawe and Murray 1981c) was based on a subglabrous form of D. nivalis (voucher specimen in ALA inspected by Elven, Grundt, and Murray). For a report of 2n = 24 (3x) from southwestern Greenland (Böcher in Gjærevoll and Ryvarden 1978, as D. "böcheri"), see notes below. |
| Geography | Asian (N): SIB. |
| Distribution | C = R D = R Tm = r [ key ] |
| Parent taxon | Draba L. |
| PAF ID | 672119 |