860505 Symphyotrichum spathulatum var. spathulatum] (Lindl.) G.L. Nesom
Distribution
Central Canada: Present only in the Borderline Arctic
Shrub Tundra: Present only in the Borderline Arctic
Bordering boreal or alpine areas: Frequent
- G.L. Nesom, Phytologia 77: 291 (1995). - Aster spathulatus Lindl. in Hook., Fl. Bor.-Amer. 2: 8 (1834). Holotype (CGE): Canada: the Northwest Territories, Bear Lake and Fort Franklin, on the Mackenzie River, leg. Richardson.
- Tripolium occidentale Nutt., Trans. Amer. Philos. Soc., n. s., 7: 296 (1840). Holotype (PH): North America: Rocky Mountains, leg. Lewis. - Aster occidentalis (Nutt.) Torr. & A. Gray, Fl. N. Amer. 2: 164 (1841).
2n=
(1) 8 (2x). - Jones (1980, for Aster occidentalis).
(2) 16 (4x). - Canada (W), U.S.A. (W). - Numerous reports, two for Aster occidentalis.
(3) 24 ca. 27 (ca. 6x). - North America (W). - Anderson et al. (1974); Allen (1984).
(4) 32 (8x). - Canada (W), U.S.A. (W). - Several reports, one for Aster occidentalis var. intermedius.
(5) 64 (16x). - North America (W). - At least three reports.
Geography: North American (NW): (CAN).
Notes: Symphyotrichum spathulatum reaches the Borderline Arctic in the Great Bear Lake area in the Northwest Territories (Scoggan 1979). Nesom (1994) divided Symphyotrichum spathulatum on four varieties. Aster occidentalis, the plant reported from the Borderline Arctic, was included by him and by Brouillet et al. (2006) in var. spathulatum.
Higher Taxa
- Symphyotrichum [8605,genus]