Senecio crassulus |
Senecio sacramentanus |
|
---|---|---|
mountain meadow butterweed, thick-leaf groundsel, thick-leaf ragwort |
Sacramento ragwort |
|
Habit | Perennials, (15–)20–50(–70) cm (rhizomes branched, ± woody). | Perennials, 20–50 cm (caudices fibrous-rooted). |
Herbage | glabrous. |
sparsely pubescent to tomentose (especially on abaxial leaf faces and among heads). |
Stems | 1–(2–4). |
single or loosely clustered. |
Leaves | (thickish-turgid) progressively reduced distally; petiolate; blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping). |
progressively reduced distally; petiolate; blades triangular, triangular-lanceolate, or lanceolate, 3–10(–15) × 1.5–4 cm, bases cordate to truncate or tapered, margins serrate or dentate (mid and distal leaves sessile, bractlike). |
Ray florets | ± 8 or ± 13; corolla laminae 5–12 mm. |
0. |
Phyllaries | (± 8) ± 13 or ± 21, 5–9 mm, tips black (villous). |
± 8, 6–9 mm, tips green. |
Calyculi | of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries). |
of 2–5+ lance-deltate to filiform bractlets (lengths 1/5–1/2 phyllaries). |
Heads | (1–)4–12 in corymbiform arrays. |
nodding, 6–10+ in racemiform-paniculiform arrays. |
Cypselae | glabrous. |
glabrous. |
2n | = 40. |
|
Senecio crassulus |
Senecio sacramentanus |
|
Phenology | Flowering summer. | Late summer. |
Habitat | Moist to drying hillsides, meadows, other open places in forest associations | Montane meadows |
Elevation | 2200–3700 m (7200–12100 ft) | 3000–3500 m (9800–11500 ft) |
Distribution |
CO; ID; MT; NM; NV; OR; SD; UT; WY
|
NM |
Source | FNA vol. 20, p. 551. | FNA vol. 20, p. 550. |
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | Asteraceae > tribe Senecioneae > Senecio |
Sibling taxa | ||
Synonyms | S. lapathifolius, S. semiamplexicaulis | |
Name authority | A. Gray: Proc. Amer. Acad. Arts 19: 54. (1883) | Wooton & Standley: Contr. U.S. Natl. Herb. 16: 194. (1913) |
Web links |