670903b Braya humilis subsp. arctica (Böcher) Rollins
Distribution
Taimyr - Severnaya Zemlya: Rare
Anabar - Onenyo: Rare
Kharaulakh: Scattered
Yana - Kolyma: Present only in the Borderline Arctic
West Chukotka: Rare
East Chukotka: Rare
Western Alaska: Scattered
Northern Alaska - Yukon: Scattered
Central Canada: Rare
Hudson Bay - Labrador: Rare
Ellesmere Island: Rare
Eastern Greenland: Scattered
Polar desert: Presence uncertain
Northern arctic Tundra: Scattered
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Scattered
- Rollins, Rhodora 55: 109 (1953). - Torularia humilis subsp. arctica Böcher, Meddel. Grønland 147, 7: 29 (1950). Syntypes (C): (1) northeastern Greenland: Jordanhill, 27. July 1930, leg. G. Seidenfaden; (2) eastern Greenland: Duséns Fjord, Ymers Ø, 10. Aug. 1933, leg. E. Tulinius; (3) eastern Greenland: Clavering Ø, Granatelv, 19. July 1933, leg. Th. Sørensen; (4) eastern Greenland: head of Loch Fyne, 02. Aug. 1929, leg. G. Seidenfaden. - Torularia arctica (Böcher) Á. Löve & D. Löve, Bot. Not. 128: 513 (1976).
2n=
42 (6x). - Siberia (N), Far East (N), Alaska, Canada, Greenland. - Several reports, numerous counts.
Geography: Asian (N/C) - amphi-Beringian - North American (N): SIB RFE ALA CAN GRL.
Notes: Subspecies arctica is assumed to be the most widespread race. The supposition that it is constantly hexaploid is based on the sorting of chromosome counts by the Löves and is probably untenable, but the plants from the type region of Greenland are hexaploid (whereas Greenland plants of P. novae-angliae are octoploid and of B. intermedia decaploid).
Higher Taxa
- Braya humilis [670903,species]