Chrysothamnus viscidiflorus subsp. viscidiflorus

Synonyms: Chrysothamnus viscidiflorus var. latifolius (D. C. Eaton) Greene Chrysothamnus viscidiflorus subsp. pumilus Chrysothamnus viscidiflorus var. stenophyllus (A. Gray) H. M. Hall
Treatment appears in FNA Volume 20. Treatment on page 193. Mentioned on page 192.

Plants 50–120 cm. Stems glabrous. Leaf blades (spreading to deflexed) green to bluish or yellowish green, linear to lanceolate, 10–75 × 1–10 mm, usually twisted, flat to sulcate, margins often scabro-ciliate, apices acute, often apiculate, faces glabrous. Heads in congested cymiform arrays. Involucres obconic to narrowly cylindric, 5.5–7 mm. Phyllaries 12–18 in (2–)3(–4) series, in weak vertical ranks, subapical green patches often present, midnerves obscure to evident distally or throughout, usually keeled, lanceolate to elliptic, unequal, margins scarious, eciliate or ciliolate, apices slightly thickened distally, faces glabrous. Disc florets 4–14; corollas 5–6.5 mm, lobes 1–1.5 mm. 2n = 18, 27, 36, 45, 54.

Phenology: Flowering summer–fall.
Habitat: Alpine taluses
Elevation: 900–4000 m



Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., Oreg., S.Dak., Utah, Wash., Wyo.


Diploids of subsp. viscidiflorus with relatively fewer florets per head and narrower involucres have been called var. stenophyllus (L. C. Anderson 1980).

Selected References


Lower Taxa

Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(Hooker) Nuttall +
Crinitaria viscidiflora +
Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
900–4000 m +
Alpine taluses +
Flowering summer–fall. +
Trans. Amer. Philos. Soc., n. s. +
Chrysothamnus viscidiflorus var. latifolius +, Chrysothamnus viscidiflorus subsp. pumilus +  and Chrysothamnus viscidiflorus var. stenophyllus +
Chrysothamnus viscidiflorus subsp. viscidiflorus +
Chrysothamnus viscidiflorus +
subspecies +