Packera breweri |
Packera flettii |
|
---|---|---|
Brewer's ragwort |
Flett's groundsel, Flett's ragwort |
|
Habit | Perennials or biennials, 40–100+ cm; fibrous-rooted (caudices erect, stout). | Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to erect). |
Stems | 1, glabrous or leaf axils tomentose. |
1 or 2–5 (often scapiform), loosely clustered, glabrous or leaf axils sparsely hairy. |
Basal leaves | (and proximal cauline) petiolate; blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous). |
(and proximal cauline) petiolate; blades obovate to ovate or sublyrate, 30–60+ × 10–40+ mm, bases tapering, margins deeply dissected or pinnatifid, ultimate margins crenate to crenate-dentate. |
Cauline leaves | gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow). |
abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid). |
Peduncles | usually ebracteate (rarely with 1–2 bractlets), glabrous. |
inconspicuously bracteate or ebracteate, glabrous. |
Ray florets | 8–10+; corolla laminae 10–15+ mm. |
5 or 8; corolla laminae 5–10 mm. |
Disc florets | 45–60+; corolla tubes 3–3.5 mm, limbs 4–4.5 mm. |
20–30+; corolla tubes 2.5–3.5 mm, limbs 2.5–3.5 mm. |
Phyllaries | 13 or 21, green, 7–9+ mm, glabrous. |
(8–)13, light green (tips yellowish), 4–7 mm, glabrous. |
Calyculi | inconspicuous. |
0 or inconspicuous. |
Heads | 15–50+ in corymbiform arrays. |
4–10+ in subumbelliform cymiform arrays. |
Cypselae | 2–2.5 mm, glabrous; pappi 6–7 mm. |
1–1.5 mm, glabrous; pappi 4–4.5 mm. |
2n | = 46. |
= 40. |
Packera breweri |
Packera flettii |
|
Phenology | Flowering mid Apr–late May. | Flowering early Jul–mid Aug. |
Habitat | Dry, rocky soils, partially shaded or protected areas, grasslands, oak savannas, roadsides, disturbed areas | Exposed slopes, rocky or gravelly soils |
Elevation | 200–1500 m (700–4900 ft) | 700–2000 m (2300–6600 ft) |
Distribution |
CA
|
OR; WA
|
Discussion | Packera breweri is known only from Coast Ranges from San Francisco Bay to Los Angeles County and along the eastern edges of the San Joaquin Valley. Populations are relatively small and sporadic; the plants appear not to hybridize with other species of Packera. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Packera flettii is known from the Olympic Mountains and near Mt. Rainer in Washington and coastal mountains of Clatsop County, Oregon. It has a chromosome number unique in the genus and is not known to hybridize with other species of Packera. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 580. | FNA vol. 20, p. 587. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio breweri | Senecio flettii |
Name authority | (Burtt Davy) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | (Wiegand) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) |
Web links |