343801 Arctagrostis latifolia (R. Br.) Griseb.
Distribution
Northern Fennoscandia: Scattered
Kanin - Pechora: Scattered
Svalbard - Franz Joseph Land: Rare
Polar Ural - Novaya Zemlya: Frequent
Yamal - Gydan: Scattered
Taimyr - Severnaya Zemlya: Frequent
Anabar - Onenyo: Scattered
Kharaulakh: Frequent
Yana - Kolyma: Scattered
West Chukotka: Scattered
Wrangel Island: Rare
South Chukotka: Frequent
East Chukotka: Frequent
Western Alaska: Frequent
Northern Alaska - Yukon: Frequent
Central Canada: Frequent
Hudson Bay - Labrador: Frequent
Ellesmere Island: Frequent
Western Greenland: Scattered
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: Scattered
- Griseb. in Ledeb., Fl. Ross. 4: 434 (1852). - Colpodium latifolium R. Br., Chlor. Melvill.: 28 (1823). Holotype (BM): Canada: the Northwest Territories?, Melville Island the Winter Harbour area, 1819-1820, leg. W.E. Parry.
2n=
(1) 28 (4x). - Vouchers in LE, see note below.
(2) 42 (6x). - Russia (N). - Sokolovskaya (1955, omitted by Löve and Löve 1975a).
(3) 56 (8x). - Russia (N), Siberia (N, S), Far East (N), Alaska, Canada, Greenland. - Numerous reports.
(4) 62 (ca. 9x). - Europe (Svalbard). - Flovik (1938, omitted by Löve and Löve 1975a). Plants with aborting anthers and pollen.
The predominant ploidy level is hexaploid but also other levels have been proved in plants morphologically belonging to A. latifolia s. str.
Unassigned counts:
(1) 28 30 (4x). - Alaska. - Bowden (1960a); Mitchell and McKendrick (1975); Mitchell (1992).
(2) 42 (6x). - Alaska. - Mitchell and McKendrick (1975); Mitchell (1992).
(3) 56 (8x). - Alaska. - Mitchell and McKendrick (1975); Mitchell (1992).
Geography: Circumpolar-alpine: NOR RUS SIB RFE ALA CAN GRL.
Notes: Tzvelev, Aiken, and Elven: Support for rank as species has been found in an assumption of two ploidy levels (see, e.g., Löve and Löve 1975a): A. arundinacea as tetraploid (2n = 28) and A. latifolia as octoploid (2n = 56). The chromosome number situation is, however, more complicated. Tzvelev (1976) reported chromosome numbers of 2n = 42, 56, and 62 for A. latifolia s. str. Five voucher specimens with the characters of A. latifolia s. str., but with 2n = 28, occur among the chromosome vouchers at LE that we (Aiken and Elven) examined and annotated in 1999.
Higher Taxa
- Arctagrostis [3438,genus]