Panarctic Flora

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850101 Menyanthes trifoliata L.

Distribution

Northern Iceland: Frequent
Northern Fennoscandia: Frequent
Kanin - Pechora: Frequent
Polar Ural - Novaya Zemlya: Rare
Yamal - Gydan: Scattered
Taimyr - Severnaya Zemlya: Scattered
Kharaulakh: Rare
Yana - Kolyma: Presence uncertain
West Chukotka: Scattered
South Chukotka: Rare
Western Alaska: Scattered
Northern Alaska - Yukon: Scattered
Central Canada: Rare
Hudson Bay - Labrador: Scattered
Western Greenland: Scattered
Eastern Greenland: Rare
Southern Arcti Tundra: Rare
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent

2n= (1) 54 (6x). - Europe, Russia, Siberia, Far East (N), Canada, Greenland. - Numerous reports, a few for "minor".
(2) 108 (12x). - Far East (Japan). - Wada (1956).

Geography: Circumboreal-polar: ICE NOR RUS SIB RFE ALA CAN GRL.

Notes: Menyanthes trifoliata var. or subsp. minor is sometimes recognized as a regional race in North America east of the Rockies. It is characterized by smaller and white corollas vs. larger and often pinkish in M. trifoliata s. str., and with shorter beards on petals (see Fernald 1929b; Scoggan 1979). Hultén (1971a: 122) did not find these differences convincing or consistent. Further study is needed before a race can be accepted.

Higher Taxa