Senecio rapifolius |
Senecio californicus |
|
---|---|---|
openwoods ragwort |
California butterweed, California ragwort |
|
Habit | Perennials, (20–)30–60 cm (rhizomes branched, spreading or suberect). | Annuals, (5–)10–30(–50+) cm (taprooted). |
Herbage | (unevenly purple-tinged, often glaucous) glabrous. |
glabrous or sparsely tomentose. |
Stems | 1–(2–3). |
usually single (erect), sometimes 2–6 (branching from bases, arching upward). |
Leaves | progressively reduced distally; petiolate; blades ovate to oblanceolate, 4–8(–9+) × (2–)3–5 cm, bases tapered, margins dentate to incised-dentate (some denticles callous; mid leaves similar, smaller, ± clasping; distal leaves bractlike). |
(sometimes subsucculent) evenly distributed; ± petiolate (proximal); blades linear-lanceolate to lanceolate 2–5(–7+) × 0.5–2(–3+) cm, bases tapered, margins subpinnatifid to dentate or subentire (mid and distal leaves sessile, bases clasping). |
Ray florets | 0. |
± 13; corolla laminae 8–11 mm. |
Phyllaries | (± 5) ± 8, 3–4(–5) mm, tips green or brownish. |
± 21 (sometimes fewer), 5–7(–8) mm, tips black. |
Calyculi | 0 or of 1–3+ lance-deltate to lance-linear bractlets (mostly less than 1 mm). |
of 5–8+ lanceolate to lance-linear or filiform bractlets (0.5–3 mm, usually inconspicuous). |
Heads | 25–60+ in cymiform clusters of 3–12. |
usually 3–10(–20+) in open, cymiform arrays, sometimes borne singly (depauperate plants). |
Cypselae | glabrous. |
hirtellous-strigose. |
2n | = 40. |
= 40. |
Senecio rapifolius |
Senecio californicus |
|
Phenology | Flowering late summer–early fall. | Flowering late winter–spring. |
Habitat | Rocky hillsides and cliffs in coniferous wooded areas | Sandy, dry or drying sites, especially near coast |
Elevation | 1800–2800 m (5900–9200 ft) | 0–1200 m (0–3900 ft) |
Distribution |
CO; ID; SD; WY
|
CA; Mexico
|
Discussion | Dwarfish, subsucculent plants of Senecio californicus from near the coast have been recognized as S. ammophilus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 553. | FNA vol. 20, p. 561. |
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | Asteraceae > tribe Senecioneae > Senecio |
Sibling taxa | ||
Synonyms | S. ammophilus, S. californicus var. ammophilus, S. coronopus | |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 409. (1841) | de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 426. (1838) |
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