Senecio crassulus |
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mountain meadow butterweed, thick-leaved groundsel |
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Habit | Herbs perennial, (1.5)2–5(7) dm; caudices ± woody, branching, rhizomatous. |
Stems | 1–4, glabrous. |
Leaves | basal present at flowering; cauline evenly distributed along stems; thick and fleshy, lanceolate to subelliptic, bases tapering; margins dentate with callous denticles to subentire; surfaces glabrous, sometimes with broadly winged petioles; proximal often early deciduous; mid-cauline sometimes larger, sessile and weakly clasping; distal smaller, sessile and clasping. |
Inflorescences | corymb-like arrays; bracts 2–4 mm, conspicuous. |
Involucres | broadly campanulate. |
Ray florets | 8 or 13; rays 5–12 mm. |
Disc florets | 55–65; deep golden to orange-yellow. |
Phyllaries | (8)13 or 21, 5–9 mm, with black tips; surfaces densely tomentose. |
Calyculi | (1)3–6 linear to filiform bractlets; (1)2–6 mm, with or without black tips. |
Fruits | 2–2.5 mm, glabrous. |
Heads | (1)4–12. |
2n | =40. |
Senecio crassulus |
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Distribution | |
Discussion | Wet to drying hillsides and meadows, open forests. Flowering May–Aug. 800–3000 m. BR, BW, Owy. ID, NV; northeast to MT, east to SD, southeast to NM. Native. |
Source | Flora of Oregon, volume 2, page 338 Debra Trock |
Sibling taxa | |
Web links |