800405 Plantago canescens Adams
- Adams, Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 233 (1834). Described from "crescit ad ripas Lenæ Jachutzk" in Yakutia (Siberia).
Geography: Asian (C-NE) & North American (NW).
Notes: Plantago canescens is polymorphic. Tzvelev (1983) accepted six races: subsp. tolmatschevii Tzvelev, Fl. Arct. URSS 8, 2: 20 (1983), in southern Siberia (the Krasnoyarsk region); subsp. trautvetteri Tzvelev, Fl. Arct. URSS 8, 2: 21 (1983), in non-arctic parts of northeastern Siberia by the Olenyok and Yana rivers; subsp. canescens in northeastern Siberia by the Olenyok, Lena, and Yana rivers and reaching the Arctic as an adventive (Sekretareva 1999) in Tiksi; subsp. jurtzevii as arctic on Chaun Bay in West Chukotka; subsp. septata (E. Morris) Tzvelev, Fl. Arct. URSS 8, 2: 21 (1983) [P. septata E. Morris in Britton & Rydb., Bull. New York Bot. Gard. 2: 182 (1901)], in non-arctic interior Alaska, the Yukon Territory, and the northern Rocky Mountains; and subsp. richardsonii as reaching the Arctic in northeastern Alaska and in the mainland Northwest Territories and Banks and Victoria islands.
There are morphological differences among the very disjunct population groups of this species. Experimental support of a consistent trans-Beringian treatment as a group of subspecies, as proposed by Tzvelev, is not available yet. We provisionally accept the three races indicated by Tzvelev to reach the Arctic.
Higher Taxa
- Plantago [8004,genus]