Antennaria dimorpha

(Nuttall) Torrey & A. Gray

Fl. N. Amer. 2: 431. 1843.

Common names: Low or two-form or cushion pussytoes
Basionym: Gnaphalium dimorphum Nuttall Trans. Amer. Philos. Soc., n. s. 7: 405. 1841
Synonyms: Antennaria dimorpha var. integra L. F. Henderson Antennaria dimorpha var. macrocephala D. C. Eaton Antennaria dimorpha var. nuttallii D. C. Eaton Antennaria latisquama Antennaria macrocephala
Treatment appears in FNA Volume 19. Treatment on page 398. Mentioned on page 389, 393, 399.

Dioecious. Plants 0.5–4 cm. Stolons none. Basal leaves: 1-nerved, linear to narrowly spatulate, 8–11 × 1–1.2 mm, tips acute, faces ± gray-tomentose. Cauline leaves linear or oblanceolate, 7–12 mm, not flagged (apices acute). Heads borne singly. Involucres: staminate 6–8 mm; pistillate 10–11 mm. Phyllaries distally dingy brown (apices acute-acuminate). Corollas: staminate 3–5 mm; pistillate 8–10 mm. Cypselae 2–3.5 mm, pubescent; pappi: staminate 4.5–6 mm; pistillate 10–12 mm. 2n = 28, 56.

Phenology: Flowering early–mid spring.
Habitat: Sagebrush steppe, plains, foothills of mountains
Elevation: 600–3400 m



Alta., B.C., Sask., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., Oreg., Utah, Wash., Wyo.


Antennaria dimorpha is characterized by narrowly oblanceolate leaves and relatively large heads (borne singly). It is, perhaps, the most xerophytic of spring-blooming Antennaria species. It belongs to the Dimorphae group.

Selected References


Lower Taxa

... more about "Antennaria dimorpha"
Randall J. Bayer +
(Nuttall) Torrey & A. Gray +
Gnaphalium dimorphum +
Low or two-form or cushion pussytoes +
Alta. +, B.C. +, Sask. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
600–3400 m +
Sagebrush steppe, plains, foothills of mountains +
Flowering early–mid spring. +
Fl. N. Amer. +
Antennaria dimorpha var. integra +, Antennaria dimorpha var. macrocephala +, Antennaria dimorpha var. nuttallii +, Antennaria latisquama +  and Antennaria macrocephala +
Antennaria dimorpha +
Antennaria +
species +