| Tephroseris kjellmanii (A.E. Porsild) Holub | |
| Publ. & Syn. | Senecio tichomirovii Schischk., Fl. URSS 26: 885, 772 (1961). Type (LE): Russian Far East: East Chukotka: "Peninsula Chukotka", 20. Aug. 1958, leg. B. Tikhomirov. |
| Notes | Murray and Elven: Tephroseris kjellmanii is morphologically unmistakeable and consistently different from both T. atropurpurea and T. frigida, also where they co-occur. We see no reason for not treating it as species and we do not consider it part of the T. atropurpurea aggregate. There is also an ecological difference. Tephroseris kjellmanii mostly grows in more unstable and clayey sites, the others in more stable, peaty and mossy sites (mires). As in T. lindstroemii, there is some differences between the plants of northern and central Alaska and the Yukon Territory on one side and those of the Bering Sea and Straits region and Chukotka on the other. The type is from the latter region: St. Lawrence Island in the Bering Sea. The plants annotated as "tomentosa" on the Asian side are mostly similar to these, whereas those annotated as "tichomirovii" are very similar to central Alaskan T. kjellmanii. However, we do not find the differences enough to recognize races. |
| Chromosomes | 48 (2x, x = 24). - Far East (N). - At least four reports. Not included: For this species, Löve and Löve (1975a) included only one report of 2n = 96 (4x) from northern Alaska (Packer and McPherson 1974). The authors published the count for Senecio atropurpureus and we assign it to Tephroseris frigida. |
| Geography | Amphi-Beringian (E): RFE ALA CAN. |
| Distribution | N = S AN = s D = S E = F WI = ? CE = f CS = s AW = r CW = r [ key ] |
| Parent taxon | Tephroseris (Rchb.) Rchb. |
| PAF ID | 862811 |