Panarctic Flora


580205 Salix interior Rowlee


Central Canada: Rare
Hudson Bay - Labrador: Rare
Shrub Tundra: Rare
Bordering boreal or alpine areas: Frequent

2n= 38 (2x). - Canada, U.S.A. - At least five reports.

Geography: North American: CAN.

Notes: Argus 1999: Salix interior reaches the Arctic in the Hudson Bay area in Ontario (see Soper and Heimburger 1982). It approaches the Arctic in the Yukon Territory and near the Mackenzie River in the Northwest Territories.

Elven: Argus (2007) did not map this trans-American species to reach the Arctic on Hudson Bay but rather to reach it in the Mackenzie River Delta. We have entered it as rare for both these regions in the distribution table.

Argus 1999: This taxon is best treated as a subspecies of S. exigua. Subspecies interior and subsp. exigua have a wide zone of overlap and intergradation in western Canada and U.S.A. An argument for rank as species could be because throughout most of Canada, Alaska, and the U.S.A. east of the Mississippi River only S. interior is present.

Elven: Argus (2007, 2010) accepted S. interior apart from the western North American S. exigua Nutt. N. Amer. Sylv. 1: 75 (1842); holotype (BM): U.S.A.: Washington or Oregon, "Columbia banks", probably near The Dalles, 1835, leg. T. Nuttall.

Higher Taxa