Senecio neowebsteri |
Senecio aphanactis |
|
---|---|---|
Olympic Mountain ragwort |
California groundsel, chaparral ragwort, rayless ragwort |
|
Habit | Perennials, 7–15(–20+) cm (rhizomes fibrous-rooted). | Annuals, 5–20+ cm (taproots relatively short and thin). |
Herbage | (sometimes purplish-tinged) floccose-tomentose, unevenly glabrescent. |
glabrous or sparsely tomentose (especially distally). |
Stems | single or loosely clustered (erect or arching). |
usually 1 (relatively thin, delicate). |
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). |
evenly distributed; sessile; blades oblanceolate to lance-linear, 2–4 × 0.5–1 cm, bases sometimes weakly clasping, margins usually subpinnate to dentate, sometimes subentire (distal leaves bractlike). |
Ray florets | ± 13; corolla laminae ± 15 mm. |
0 or 1–5; corolla laminae 0.5–1+ mm (barely surpassing phyllaries, heads perhaps technically disciform). |
Phyllaries | usually ± 21, sometimes ± 13, (8–)10–15 mm, tips usually greenish (often sparsely hairy). |
± 8 or ± 13, 5–6 mm, tips greenish. |
Calyculi | of 4–8 lanceolate to lance-linear bractlets (lengths mostly less than 1/2 phyllaries). |
0 or of 1–3+ lance-deltate bractlets. |
Heads | nodding, 1(–2). |
4–10+ in open, cymiform arrays. |
Cypselae | glabrous. |
densely hairy. |
2n | = 40. |
= 40. |
Senecio neowebsteri |
Senecio aphanactis |
|
Phenology | Flowering late summer–early fall. | Flowering late winter–spring. |
Habitat | High talus slopes | Dry, open ground, especially alkaline flats |
Elevation | 2200–2600 m (7200–8500 ft) | 10–400 m (0–1300 ft) |
Distribution |
WA
|
CA; Mexico (Baja California)
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 553. | FNA vol. 20, p. 563. |
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | Asteraceae > tribe Senecioneae > Senecio |
Sibling taxa | ||
Synonyms | S. websteri | |
Name authority | S. F. Blake: Leafl. W. Bot. 8: 143. (1957) | Greene: Pittonia 1: 220. (1888) |
Web links |