Senecio neowebsteri |
Senecio californicus |
|
---|---|---|
Olympic Mountain ragwort |
California butterweed, California ragwort |
|
Habit | Perennials, 7–15(–20+) cm (rhizomes fibrous-rooted). | Annuals, (5–)10–30(–50+) cm (taprooted). |
Herbage | (sometimes purplish-tinged) floccose-tomentose, unevenly glabrescent. |
glabrous or sparsely tomentose. |
Stems | single or loosely clustered (erect or arching). |
usually single (erect), sometimes 2–6 (branching from bases, arching upward). |
Leaves | mostly cauline; petiolate (petioles about equaling blades); blades lanceolate or oblanceolate to ovate, (2–)4–8+ × 1.5–3 cm, bases tapered, margins denticulate (distal leaves smaller, lanceolate or linear-lanceolate, 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 | ± 13; corolla laminae ± 15 mm. |
± 13; corolla laminae 8–11 mm. |
Phyllaries | usually ± 21, sometimes ± 13, (8–)10–15 mm, tips usually greenish (often sparsely hairy). |
± 21 (sometimes fewer), 5–7(–8) mm, tips black. |
Calyculi | of 4–8 lanceolate to lance-linear bractlets (lengths mostly less than 1/2 phyllaries). |
of 5–8+ lanceolate to lance-linear or filiform bractlets (0.5–3 mm, usually inconspicuous). |
Heads | nodding, 1(–2). |
usually 3–10(–20+) in open, cymiform arrays, sometimes borne singly (depauperate plants). |
Cypselae | glabrous. |
hirtellous-strigose. |
2n | = 40. |
= 40. |
Senecio neowebsteri |
Senecio californicus |
|
Phenology | Flowering late summer–early fall. | Flowering late winter–spring. |
Habitat | High talus slopes | Sandy, dry or drying sites, especially near coast |
Elevation | 2200–2600 m (7200–8500 ft) | 0–1200 m (0–3900 ft) |
Distribution |
WA
|
CA; Mexico
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. websteri | S. ammophilus, S. californicus var. ammophilus, S. coronopus |
Name authority | S. F. Blake: Leafl. W. Bot. 8: 143. (1957) | de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 426. (1838) |
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