Flora of North America species comparison

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Senecio integerrimus var. integerrimus

Senecio integerrimus var. ochroleucus
Photo is of parent taxon

lambstongue ragwort
Photo is of parent taxon

pale-yellow ragwort, western groundsel, white flower mountain butterweed, white western groundsel
Herbage

glabrous or glabrescent at flowering (except in leaf axils and among heads).

arachnose, tomentose, or villous, unevenly glabrescent, at flowering.
Leaves

basal and proximal cauline distinctly petiolate;

blades (cauline) elliptic, lanceolate, or oblanceolate.

basal and proximal cauline distinctly petiolate;

blades (cauline) usually ovate to rounded-deltate, sometimes obovate to oblanceolate.
Ray florets

5–8+;

corollas yellow, laminae 6–8+ mm.

usually 5;

corollas white or ochroleucous, laminae (5–)10–15(–20) mm.
Phyllaries

linear-subulate, 6–7(–8) mm, tips usually green, minutely, if at all, black.

± linear, 7–10 mm, tips green or minutely black.
Heads

(3–)8–20+.

(3–)8–12(–40+).

Senecio integerrimus var. integerrimus

Senecio integerrimus var. ochroleucus
Phenology Flowering spring. Flowering spring.
Habitat Open prairies and plains Moist openings in coniferous woodlands
Elevation 200–1500 m (700–4900 ft) 600–1700 m (2000–5600 ft)
Distribution
from FNA
CO; IA; KS; MN; MT; ND; NE; NM; SD; WY; AB; MB; SK
[BONAP county map]
from FNA
CA; ID; MT; OR; WA; AB; BC
[BONAP county map]
Discussion

Variety integerrimus intergrades with var. exaltatus in the Rocky Mountains.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 556. FNA vol. 20, p. 557.
Parent taxa Asteraceae > tribe Senecioneae > Senecio > Senecio integerrimus Asteraceae > tribe Senecioneae > Senecio > Senecio integerrimus
Sibling taxa
S. integerrimus var. exaltatus, S. integerrimus var. major, S. integerrimus var. ochroleucus, S. integerrimus var. scribneri
S. integerrimus var. exaltatus, S. integerrimus var. integerrimus, S. integerrimus var. major, S. integerrimus var. scribneri
Synonyms S. lugens var. ochroleucus, S. cordatus, S. exaltatus subsp. ochraceus, S. leibergii, S. ochraceus
Name authority unknown (A. Gray) 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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