670701 Eutrema edwardsii R. Br.
Distribution
Northern Fennoscandia: Rare
Kanin - Pechora: Scattered
Svalbard - Franz Joseph Land: Scattered
Polar Ural - Novaya Zemlya: Frequent
Yamal - Gydan: Scattered
Taimyr - Severnaya Zemlya: Frequent
Anabar - Onenyo: Frequent
Kharaulakh: Frequent
Yana - Kolyma: Frequent
West Chukotka: Frequent
Wrangel Island: Frequent
South Chukotka: Scattered
East Chukotka: Frequent
Western Alaska: Frequent
Northern Alaska - Yukon: Frequent
Central Canada: Frequent
Hudson Bay - Labrador: Frequent
Ellesmere Island: Frequent
Western Greenland: Rare
Eastern Greenland: Scattered
Polar desert: Scattered
Northern arctic Tundra: Frequent
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Scattered
- R. Br., Chlor. Melvill.: 9 (1823). Described from Melville Island the Winter Harbour area, 1819-1820, probably the Northwest Territories (Canada).
2n=
(1) 28 (4x). - Siberia (N, E), Far East (N), Alaska, Canada, Greenland. - Numerous reports.
(2) 42 (6x). - Russia (N), Siberia (N), Canada. - Several reports.
(3) 56 (8x). - Alaska. - Knaben (1968).
Not included: A report of 2n = 18 from the North Slope of the Brooks Range, Alaska (Rollins 1966). In need of confirmation as the base chromosome number seems to be x = 7. Internal note: Check for possible misprint or mis-citation: Contr. Gray Herb. 197: 43-65.
Geography: Circumpolar-alpine: NOR RUS SIB RFE ALA CAN GRL.
Notes: The wide morphological variation in Eutrema edwardsii, and also the ploidy variation, suggests some interesting structure. This species could be a rewarding object for circumpolar molecular and morphological study.
Higher Taxa
- Eutrema [6707,genus]