| Salix glauca subsp. acutifolia (Hook.) Hultén | |
| Publ. & Syn. | Salix seemannii Rydb., Bull. New York Bot. Gard. 2: 164 (1901). Type: Canada: the Yukon Territory, Dawson, 11. June 1899, leg. R.S. Williams. |
| Notes | Argus and Elven: Subspecies acutifolia extends from the interior of Alaska and the Yukon Territory south and east to the central Northwest Territories. There it overlaps subsp. callicarpaea and subsp. villosa (a boreal and Cordilleran race not further considered here). The leaves of subsp. acutifolia have a characteristic villous-woolly (to silky) pubescence but they may become glabrate in age. It is distinguished from subsp. callicarpaea by its larger leaves with entire margins and more acute tips, more prominent stipules, longer petioles, and catkins on shorter flowering branchlets. |
| Chromosomes | (1) 76 (4x). - Far East (N), Alaska, Canada. - Numerous reports, Canadian ones partly for S. seemannii. (2) 95 96 (5x). - Far East (N), Alaska, Canada. - Suda and Argus (1969a); Petrovsky and Zhukova (1983a). (3) >100. - Alaska. - A. Johnson in letter (1965) to G. Argus. (4) 114 (6x). - Europe (N), Siberia (N), Far East (N), Alaska, Canada, Greenland. - Numerous reports, a Canadian one for S. cordifolia. (5) 152 (8x). - Europe (N), Far East (N). - Several reports. (6) 176. - Europe. - Wilkinson (1944, 1954). (7) 190 (10x). - Far East (N). - Zhukova and Petrovsky (1977). Suda and Argus (1969a) found 2n = 76, 95, and 114 in one population at Umiat in northern Alaska (within the range of subsp. stipulifera). Variation in ploidy, even at a local scale, is suggested. |
| Geography | North American (NW): ALA CAN. |
| Distribution | N = F AN = s D = ? E = S CC = s HL = ? [ key ] |
| Parent taxon | Salix glauca L. |
| PAF ID | 580213c |