862807 Tephroseris lindstroemii (Ostenf.) Á. Löve & D. Löve
Distribution
West Chukotka: Frequent
South Chukotka: Frequent
East Chukotka: Frequent
Western Alaska: Frequent
Northern Alaska - Yukon: Frequent
Mid Arctic Tundra: Rare
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent
- Á. Löve & D. Löve, Bot. Not. 128: 520 (1976). - Senecio integrifolius var. lindstroemii Ostenf., Skr. Vidensk.-Selsk. Christiania 1909, Math.-Naturvidensk. Kl. 1909, 8: 70 (1910). Holotype (O!): Canada: the Yukon Territory, King Point, Lat. N. 696'40'', Long. W. 13740', 04.-07. July 1906, leg. A.H. Lindström. - Senecio lindstroemii (Ostenf.) A.E. Porsild, Bull. Natl. Mus. Canada 101: 27 (1945). - Senecio tundricola subsp. lindstroemii (Ostenf.) Korobkov, Fl. Arct. URSS 10: 223 (1987). - Tephroseris tundricola subsp. lindstroemii (Ostenf.) E. Wiebe, Fl. Sibir. 13: 161 (1997).
- Senecio fuscatus auct., non (Jord. ex Fourr.) Hayek (1917).
2n=
46 48 (2, x = 24). - Far East (N), Alaska, U.S.A. (W). - Ornduff et al. (1967); Johnson and Packer (1968); Knaben (1968); Zhukova and Tikhonova (1973).
These reports, under several names, are the ones we with most confidence assign to T. lindstroemii. See notes.
Geography: Amphi-Beringian & Cordilleran (S): RFE ALA CAN.
Notes: Murray and Elven: Löve and Löve (1975a) referred five reports of numbers around 2n = 48 (6x) under the name Tephroseris lindstroemii. However, they synonymized T. tundricola with T. lindstroemii and reported its range from northern Europe east to Alaska. This means that the original sources must be checked in every case. The reports accepted above suggest that T. lindstroemii might be fairly consistently diploid, whereas the substantiated and suggested counts of T. tundricola are of tetraploids. If this difference is confirmed, it is additional support for two species.
We have revised the Alaskan material and a fair amount of Russian material (ALA, O). There are some small differences between the majority of the Alaskan and Yukon Territory plants on one hand and those of the Bering Strait and Sea regions and Chukotka on the other, but we would assign them to the same species and consider them consistently different from (and without any transition to) the Russian plants assigned to T. tundricola and T. integrifolia. We can see no justification of or benefit from a merger.
Higher Taxa
- Tephroseris [8628,genus]