Antennaria dimorpha

(Nuttall) Torrey & A. Gray

Fl. N. Amer.2: 431. 1843

Common names: Low or two-form or cushion pussytoes
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
Basionyms: Gnaphalium dimorphum Nuttall Trans. Amer. Philos. Soc., n. s. 7: 405. 1841
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.



Lower Taxa

No lower taxa listed.

Facts about "Antennaria dimorpha"
AuthorRandall J. Bayer +
Authority(Nuttall) Torrey & A. Gray +
BasionymsGnaphalium dimorphum +
Common nameLow or two-form or cushion pussytoes +
DistributionAlta. +, B.C. +, Sask. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. + and Wyo. +
Elevation600–3400 m +
HabitatSagebrush steppe, plains, foothills of mountains +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering early–mid spring. +
Publication titleFl. N. Amer. +
Publication year1843 +
ReferenceNone +
Source xml grained fna xml/V19-20-21/V19 633.xml +
SynonymsAntennaria dimorpha var. integra +, Antennaria dimorpha var. macrocephala +, Antennaria dimorpha var. nuttallii +, Antennaria latisquama + and Antennaria macrocephala +
Taxon familyAsteraceae +
Taxon nameAntennaria dimorpha +
Taxon parentAntennaria +
Taxon rankspecies +
VolumeVolume 19 +