Packera eurycephala |
Packera flettii |
|||||
---|---|---|---|---|---|---|
cut-leaf butterweed, wide-head groundsel |
Flett's groundsel, Flett's ragwort |
|||||
Habit | Perennials, 20–50+ cm, taprooted (caudices branched, ascending to erect, woody). | Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to erect). | ||||
Stems | 1 or, usually, multiple, clustered, densely tomentose to glabrescent. |
1 or 2–5 (often scapiform), loosely clustered, glabrous or leaf axils sparsely hairy. |
||||
Basal leaves | (soon withering), petiolate; blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate. |
(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, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised). |
abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid). |
||||
Peduncles | bracteate, sparsely to densely lanate-tomentose. |
inconspicuously bracteate or ebracteate, glabrous. |
||||
Ray florets | 8 or 13; corolla laminae 10–15 mm. |
5 or 8; corolla laminae 5–10 mm. |
||||
Disc florets | 35–50+; corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm. |
20–30+; corolla tubes 2.5–3.5 mm, limbs 2.5–3.5 mm. |
||||
Phyllaries | 13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally. |
(8–)13, light green (tips yellowish), 4–7 mm, glabrous. |
||||
Calyculi | inconspicuous (bractlets tomentose). |
0 or inconspicuous. |
||||
Heads | 5–20+ in open or compact (rarely), cymiform arrays. |
4–10+ in subumbelliform cymiform arrays. |
||||
Cypselae | 1–1.5 mm, glabrous; pappi 6–7 mm. |
1–1.5 mm, glabrous; pappi 4–4.5 mm. |
||||
2n | = 46. |
= 40. |
||||
Packera eurycephala |
Packera flettii |
|||||
Phenology | Flowering early Jul–mid Aug. | |||||
Habitat | Exposed slopes, rocky or gravelly soils | |||||
Elevation | 700–2000 m (2300–6600 ft) | |||||
Distribution |
CA; OR
|
OR; WA
|
||||
Discussion | Varieties 2 (2 in the flora). (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.) |
||||
Key |
|
|||||
Source | FNA vol. 20, p. 586. | FNA vol. 20, p. 587. | ||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Senecio eurycephalus | Senecio flettii | ||||
Name authority | (Torrey & A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | (Wiegand) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | ||||
Web links |