Artemisia campestris subsp. canadensis (Michx.) H.J.Scoggan
Family: Asteraceae
[Artemisia campestris var. canadensis (Michx.) S.L.Welsh,  more...]
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Biennials, 20-40 cm. Stems usually 1. Leaves: basal rosettes not persistent. Heads in arrays 8-10(-12) × 1-2(-3) cm. Involucres globose. 3-4 × 3.5-5(-6) mm.

Flowering early-late summer. Open meadows; 0-1000 m; Greenland; Man., N.B., Nfld. and Labr., Nunavut, Ont., Que., Sask.; Maine.

A more broadly circumscribed interpretation of the subsp. caudata complex would encompass subsp. canadensis.