500204 Chrysosplenium tetrandrum (N. Lund ex Malmgren) Th. Fr.
Distribution
Northern Fennoscandia: Scattered
Kanin - Pechora: Scattered
Svalbard - Franz Joseph Land: Frequent
Polar Ural - Novaya Zemlya: Scattered
Yamal - Gydan: Rare
Taimyr - Severnaya Zemlya: Rare
Yana - Kolyma: Rare
West Chukotka: Frequent
Wrangel Island: Rare
South Chukotka: Scattered
East Chukotka: Frequent
Western Alaska: Frequent
Northern Alaska - Yukon: Frequent
Central Canada: Frequent
Hudson Bay - Labrador: Frequent
Ellesmere Island: Rare
Eastern Greenland: Rare
Northern arctic Tundra: Scattered
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Scattered
- Th. Fr., Bot. Not. 1858: 193 (1859). - Chrysosplenium alternifolium var. tetrandrum N. Lund ex Malmgren, Bot. Not. 1846: 39 (1846). Described from Tana in Finnmark (Norway). - Chrysosplenium alternifolium subsp. tetrandrum (N. Lund ex Malmgren) A. Blytt & O.C. Dahl, Haandb. Norges Fl.: 411 (1906 1904).
2n=
24 (4x). - Europe (N), Siberia (N), Far East (N), Alaska, Canada. - Numerous reports.
Geography: Circumpolar & Cordilleran: NOR RUS SIB RFE ALA CAN GRL.
Notes: The subspecific combination by Blytt and Dahl has priority. Jalas et al. (1999) stated that a combination by Cajander (1906: 325) from early in 1906 predates that of Blytt and Dahl from October 1906. However, the flora of Blytt and Dahl was printed and distributed in fascicles. Fascicle 26 (where Chrysosplenium appeared) was available to the public already in 1904. Both combinations much predate the more often cited combination of Hultén (1937: 217).
The main diagnostic difference between C. tetrandrum and C. alternifolium is the fewer stamens, four ("tetrandrum") vs. eight, in addition to a different ploidy level (C. alternifolium is predominantly octoploid). Additionally there are some quantitative characters and the plants are almost never misidentified.
Higher Taxa
- Chrysosplenium [5002,genus]