Flora of North America species comparison

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Senecio integerrimus var. exaltatus
Photo is of parent taxon

Columbia Mountain butterweed, Columbia ragwort, lambs-tongue groundsel, one-stem butterweed, tall western groundsel, western groundsel
Herbage

copiously to sparsely arachnose, tomentose, or villous at flowering.
Leaves

basal and proximal cauline usually indistinctly petiolate;

blades (cauline) mostly elliptic to lanceolate or oblanceolate, sometimes rounded-deltate or suborbiculate.
Ray florets

usually ± 5, sometimes 0;

corollas yellow, laminae 6–15 mm.
Phyllaries

± lanceolate, (4–)5–10 mm, tips black.
Heads

6–15(–30+).

Senecio integerrimus var. exaltatus
Phenology Flowering spring.
Habitat Open woodlands, sagebrush plains, meadow grasslands from foothills to above timberline
Elevation 500–3200 m (1600–10500 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC; SK
[BONAP county map]
Discussion

Variety exaltatus is the most widespread and variable variety of the species. Eradiate plants of var. exaltatus have been recognized as var. vaseyi; there appears to be no populational integrity to the eradiate condition.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 557.
Parent taxa Asteraceae > tribe Senecioneae > Senecio > Senecio integerrimus
Sibling taxa
S. integerrimus var. integerrimus, S. integerrimus var. major, S. integerrimus var. ochroleucus, S. integerrimus var. scribneri
Synonyms S. exaltatus, S. dispar, S. hookeri, S. integerrimus var. vaseyi, S. lugens var. exaltatus, S. perplexus, S. vaseyi
Name authority (Nuttall) Cronquist: Leafl. W. Bot. 6: 48. (1950)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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