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FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Antennaria

17a. Antennaria howellii Greene subsp. canadensis (Greene) R. J. Bayer, Brittonia. 41: 397. 1989.

Canadian pussytoes, antennaire du Canada

Antennaria canadensis Greene, Pittonia 3: 275. 1898; A. canadensis var. randii Fernald; A. canadensis var. spathulata Fernald; A. neglecta Greene var. randii (Fernald) Cronquist; A. neodioica Greene subsp. canadensis (Greene) R. J. Bayer & Stebbins; A. neodioica Greene var. randii (Fernald) B. Boivin; A. spathulata (Fernald) Fernald

Plants 15–35 cm (stems stipitate-glandular). Stolons 3–8 cm. Basal leaves 1-nerved, spatulate to oblanceolate, 20–40 × 6–9 mm, tips mucronate, faces abaxially tomentose, adaxially green-glabrous. Cauline leaves linear, 12–30 mm, distal flagged. Heads 3–7 in corymbiform arrays. Involucres: staminate unknown; pistillate 7–10 mm. Phyllaries (sometimes rose at bases) distally white or cream. Corollas: pistillate 4–6.5 mm. Cypselae 1–1.5 mm, papillate; pappi: pistillate 7–9 mm. 2n = 56, 84 (under A. neodioica).

Flowering mid spring–early summer. Pastures, dry fields, openings in woodlands and forests, and rock barrens; 0–1500 m; Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Yukon. Conn., Del., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt., Va., W.Va., Wis.

Subspecies canadensis is almost restricted to the eastern half of North America. It is probably most closely related to Antennaria racemosa of the northern Rockies and A. neglecta of the Great Plains; see R. J. Bayer 1985).


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