Senecio integerrimus var. scribneri
Senecio integerrimus var. exaltatus
Scribner's ragwort
Columbia Mountain butterweed, Columbia ragwort, lambs-tongue groundsel, one-stem butterweed, tall western groundsel, western groundsel
usually villous, sometimes arachnose or tomentose, at flowering.
copiously to sparsely arachnose, tomentose, or villous at flowering.
basal and proximal cauline ± petiolate;
blades (cauline) oblong or lanceolate to sublinear (6–10 × 0.5–2 cm).
basal and proximal cauline usually indistinctly petiolate;
blades (cauline) mostly elliptic to lanceolate or oblanceolate, sometimes rounded-deltate or suborbiculate.
probably mostly 5;
corollas yellow, laminae 12–15 mm.
usually ± 5, sometimes 0;
corollas yellow, laminae 6–15 mm.
± linear, 10–15 mm, tips usually green, rarely black.
± lanceolate, (4–)5–10 mm, tips black.
3–6(–16+).
6–15(–30+).
Senecio integerrimus var. scribneri
Senecio integerrimus var. exaltatus
Of conservation concern.
Variety scribneri is poorly known and seldom collected. It is distinguished by its relatively larger heads and narrower leaves and its indument (in a region where var. integerrimus is notably glabrate).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
- Local floras:
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