Flora of North America species comparison

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Senecio integerrimus var. major

Senecio integerrimus var. ochroleucus
Photo is of parent taxon

big-head groundsel, lambs-tongue ragwort, lambstongue groundsel
Photo is of parent taxon

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

usually copiously arachnose, tomentose, or villous at flowering.

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

basal and proximal cauline distinctly petiolate;

blades (cauline) usually lanceolate to oblanceolate.

basal and proximal cauline distinctly petiolate;

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

usually 5;

corollas yellow, laminae mostly 5–8 mm.

usually 5;

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

linear-subulate, 8–12 mm, tips usually green, minutely, if at all, black.

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

6–12(–30+).

(3–)8–12(–40+).

Senecio integerrimus var. major

Senecio integerrimus var. ochroleucus
Phenology Flowering spring. Flowering spring.
Habitat Openings in coniferous woodlands and woodland-sagebrush associations Moist openings in coniferous woodlands
Elevation 100–3600 m (300–11800 ft) 600–1700 m (2000–5600 ft)
Distribution
from FNA
CA; NV; OR
[BONAP county map]
from FNA
CA; ID; MT; OR; WA; AB; BC
[BONAP county map]
Discussion

Variety major is most frequent in the Sierra Nevada, especially on the western slope; eastward, it passes into var. exaltatus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 557. 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. integerrimus, 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. eurycephalus var. major, S. lugens var. megacephalus, S. mendocinensis, S. whippleanus S. lugens var. ochroleucus, S. cordatus, S. exaltatus subsp. ochraceus, S. leibergii, S. ochraceus
Name authority (A. Gray) Cronquist: Aliso 4: 100. (1958) (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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