520203 Chamerion latifolium (L.) Holub
Distribution
Northern Iceland: Frequent
Polar Ural - Novaya Zemlya: Scattered
Taimyr - Severnaya Zemlya: Rare
Anabar - Onenyo: Rare
Kharaulakh: Scattered
West Chukotka: Scattered
Wrangel Island: Scattered
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: Frequent
Eastern Greenland: Frequent
Polar desert: Rare
Northern arctic Tundra: Frequent
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent
- Holub, Folia Geobot. Phytotax. 7: 86 (1972). - Epilobium latifolium L., Sp. Pl.: 347 (1753). Lectotype (LINN): Siberia. Herb. Linn. 486.2, leg. Steller? (Raven 1964: 5). - Chamaenerion latifolium (L.) Sweet, Hort. Brit., ed. 2: 198 (1830).
- Chamaenerion subdentatum Rydb., Fl. Rocky Mts.: 585 (1917). Described from the Rocky Mountains. - Chamerion subdentatum (Rydb.) Á. Löve & D. Löve, Bot. Not. 128: 516 (1976).
2n=
(1) 36 (4x?). - Siberia, Asia (C), Far East, Alaska, Canada, U.S.A. - Several reports, numerous counts.
(2) 54 (6x?). - Canada. - Mosquin and Hayley (1966); Small (1968, two counts).
(3) 72 (8x?). - Europe (N), Russia (N), Siberia (N, S), Far East, Alaska, Canada, Greenland. - Numerous reports.
Geography: Circumpolar-alpine: ICE RUS SIB RFE ALA CAN GRL.
Notes: Small (1968) made a study of Chamerion latifolium parallel to Mosquin's (1966) study of C. angustifolium but reached different conclusions. There were differences in the geographical ranges of the two ploidy levels but no consistent morphological difference except for the balance between triporate pollen grains in the tetraploid plants and mixed triporate and tetraporate ones in the octoploid plants. Quadrivalent formation was very pronounced and autoploidy is suggested.
Löve and Löve (1976a) raised the tetraploids to species rank as C. subdentatum, based on a morphologically not very convincing argument: "This is the tetraploid mainly western American and eastern Asian alpine taxon corresponding to the more widespread and almost circumpolar arctic-alpine octoploid species C. latifolium (L.) Holub". In 1975, the Löves denoted the two as hexaploid and dodecaploid (with base number x = 6), in 1976 as tetraploid and octoploid (with base number x = 9). We follow Small's good arguments for not recognizing named races.
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Source: Slaunger at Wikispecies
Higher Taxa
- Chamerion [5202,genus]