Symphyotrichum ontarionis var. glabratum
Phytologia 82: 138. 1997.
Endemic
Basionym: Aster ontarionis var. glabratus Semple in J. C. Semple et al., Asters Ontario ed. 2, 60. 1996
Leaves: abaxial faces glabrous or glabrate. 2n = 32.
Phenology: Flowering Jul–Aug.
Habitat: Alluvial stream shores
Elevation: 10–200 m
Distribution
Ont., Que., Mich.
Discussion
Variety glabratum reaches farther north in Ontario and Quebec than does var. ontarionis, as far as the Clay Belt and streams of the James Bay basin. It may be present in Minnesota and Wisconsin. It may be confused with Symphyotrichum tradescantii, which is mostly allopatric. It is distinguished from the latter by its more deeply lobed disc corollas.
Selected References
None.
Lower Taxa
None.