320106 Juncus leucochlamys V.J. Zinger ex V.I. Krecz.
Distribution
Northern Iceland: Rare
Svalbard - Franz Joseph Land: Rare
Taimyr - Severnaya Zemlya: Scattered
Anabar - Onenyo: Scattered
Kharaulakh: Frequent
Yana - Kolyma: Rare
West Chukotka: Frequent
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: Rare
Western Greenland: Frequent
Eastern Greenland: Scattered
Mid Arctic Tundra: Rare
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent
- V.I. Krecz., Fl. Transbaical. 2: 141 (1931). Holotype (LE): Siberia: Dahuria, the Chita region, Darassun, July 1894, leg. G.A. Stuckow 101. - Juncus castaneus subsp. leucochlamys (V.J. Zinger ex V.I. Krecz.) Hultén, Ark. Bot., n. s., 7, 1: 31 (1968).
- Juncus leucochlamys var. borealis Tolm., Fl. Arct. URSS 4: 21 (1963). Holotype (LE): Siberia, "In valle fluminis Medveshja, infra ostium fl. Bychy", 06. Aug. 1935, leg. F.B. Sambuk. - Juncus leucochlamys subsp. borealis (Tolm.) Novikov, Sosud. Rast. Sovet. Dal'nego Vostoka 1: 74 (1985).
2n=
(1) 60. - Siberia (N), Far East (N), Canada, Greenland. - Several reports, mostly for J. castaneus.
(2) >90. - Far East (South Chukotka). - Zhukova (1980).
(3) 120. - Far East (N). - Zhukova and Petrovsky (1975); Yurtsev and Zhukova (1978).
Geography: Asian (N/C) - amphi-Beringian - North American (N) - amphi-Atlantic (W): ICE NOR SIB RFE ALA CAN GRL.
Notes: Solstad and Elven: In Europe, Juncus leucochlamys is restriced to northwestern Iceland and Svalbard (Elven et al. 2010).
Elven: We do not yet have data for evaluation of a reported northern race ("borealis") within J. leucochlamys. The wide polymorphy observed in the material from northeastern Asia and northwestern North America does not, however, support a geographically distinct race. Kirschner et al. (2002b) synonymised var. borealis with subsp. leucochlamys.
Higher Taxa
- Juncus [3201,genus]