Pyrrocoma uniflora var. uniflora

Synonyms: Haplopappus contractus H. M. Hall Haplopappus uniflorus subsp. howellii (A. Gray) H. M. Hall Haplopappus uniflorus var. howellii Pyrrocoma howellii
Treatment appears in FNA Volume 20. Treatment on page 424. Mentioned on page 423.

Plants 10–40 cm. Stems reddish, tomentose, lanate, or glabrate. Leaves: basal blades narrowly to broadly lanceolate, 50–100 × 5–15 mm, margins usually remotely denticulate, rarely laciniate or entire; faces tomentose to glabrate or glabrous. Heads usually borne singly, terminal, rarely 1–2 additional proximally. Involucres 6–9 × 13–18 mm. Phyllaries appressed, subequal, outer sometimes shorter. 2n = 12.

Phenology: Flowering May–Sep.
Habitat: Montane pine forests, alkaline meadows, around hot springs
Elevation: 1400–2900 m



Alta., N.W.T., Sask., Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wyo.


Variety uniflora is the more widespread and variable of the two varieties.

Selected References


Lower Taxa

David J. Bogler +
(Hooker) Greene +
Donia uniflora +
Alta. +, N.W.T. +, Sask. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +  and Wyo. +
1400–2900 m +
Montane pine forests, alkaline meadows, around hot springs +
Flowering May–Sep. +
Haplopappus contractus +, Haplopappus uniflorus subsp. howellii +, Haplopappus uniflorus var. howellii +  and Pyrrocoma howellii +
Pyrrocoma uniflora var. uniflora +
Pyrrocoma uniflora +
variety +