500111a Micranthes nelsoniana subsp. nelsoniana
Distribution
Polar Ural - Novaya Zemlya: Rare
Yamal - Gydan: Scattered
Taimyr - Severnaya Zemlya: Frequent
Anabar - Onenyo: Scattered
Kharaulakh: Frequent
Yana - Kolyma: Frequent
West Chukotka: Frequent
Wrangel Island: Frequent
South Chukotka: Frequent
East Chukotka: Frequent
Western Alaska: Frequent
Northern Alaska - Yukon: Frequent
Northern arctic Tundra: Rare
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent
- Saxifraga microcephala A.P. Khokhr. & Kuvaev, Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol. 99, 1: 110 (1994). Described from Krasnoyarsk (Siberia).
2n=
(1) 56. - Far East (Kamtchatka). - Zhukova and Petrovsky (1987a).
(2) 60. - Far East (N). - At least three reports.
(3) 64. - Far East (West Chukotka). - Zhukova and Petrovsky (1987a).
(4) 70. - Siberia (N), Far East (N). - At least five reports.
(5) >70. - Siberia (N), Far East (N). - Zhukova and Petrovsky (1987a).
(6) 80. - Siberia (N), Far East (N), Alaska. - Several reports, numerous counts.
(7) 84. - Siberia (N), Far East (N), Alaska, Canada (NW). - At least five reports.
Löve and Löve (1975a) stated this taxon to uniformly have 2n = 80 and omitted reports of other numbers. Brouillet and Elvander (2009a) accepted 2n = ca. 80 and ca. 84.
Geography: Asian (N) - amphi-Beringian: RUS SIB RFE ALA CAN.
Notes: Zhmylev: Subspecies nelsoniana is characterized by compact inflorescence and pubescent and crenate leaves with less than 15 indentations. However, plants with less compact inflorescence and less pubescent leaves are not rare in the southern parts of the Arctic, which sometimes makes separation from subsp. aestivalis very difficult.
Higher Taxa
- Micranthes nelsoniana [500111,species]