Packera fendleri |
Packera eurycephala |
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Fendler's ragwort, notchleaf groundsel |
cut-leaf butterweed, wide-head groundsel |
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Habit | Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). | Perennials, 20–50+ cm, taprooted (caudices branched, ascending to erect, woody). | ||||
Stems | 1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent. |
1 or, usually, multiple, clustered, densely tomentose to glabrescent. |
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Basal leaves | petiolate; blades lanceolate to oblanceolate, 30–60+ × 10–30+ mm, bases tapering, margins shallowly, evenly pinnatifid to pinnatisect or wavy (adaxial faces floccose-tomentose or subglabrescent). |
(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. |
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Cauline leaves | gradually reduced (sessile; lanceolate to oblanceolate, pinnatisect to wavy). |
gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised). |
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Peduncles | bracteate, densely to irregularly floccose. |
bracteate, sparsely to densely lanate-tomentose. |
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Ray florets | 6–8+; corolla laminae 5–7 mm. |
8 or 13; corolla laminae 10–15 mm. |
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Disc florets | 30–40+; corolla tubes 2.5–3 mm, limbs, 2.5–3.5 mm. |
35–50+; corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm. |
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Phyllaries | 13, green, 5–7 mm, floccose proximally to glabrescent distally. |
13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally. |
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Calyculi | 0 or inconspicuous (bractlets red-tinged). |
inconspicuous (bractlets tomentose). |
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Heads | 6–25+ in open or compact, corymbiform arrays. |
5–20+ in open or compact (rarely), cymiform arrays. |
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Cypselae | 2.5–3 mm, glabrous; pappi 4–5 mm. |
1–1.5 mm, glabrous; pappi 6–7 mm. |
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2n | = 46. |
= 46. |
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Packera fendleri |
Packera eurycephala |
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Phenology | Flowering late May–early Oct. | |||||
Habitat | Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites | |||||
Elevation | 1600–3200 m (5200–10500 ft) | |||||
Distribution |
CO; NM; WY
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CA; OR
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Discussion | Packera fendleri is abundant, almost weedy in the southern Rocky Mountains. It thrives in a wide range of elevations and in a wide variety of habitats; flowering times vary. It frequently grows in close association with other species of Packera and may hybridize with them. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 587. | FNA vol. 20, p. 586. | ||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Senecio fendleri, Senecio canovirens, Senecio fendleri var. molestus, Senecio nelsonii, Senecio rosulatus, Senecio salicinus | Senecio eurycephalus | ||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | (Torrey & A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | ||||
Web links |