Packera fendleri

(A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 46. 1981.

Common names: Fendler’s ragwort
Basionym: Senecio fendleri A. Gray Mem. Amer. Acad. Arts, n. s. 4: 108. 1849
Synonyms: Senecio canovirens Rydberg Senecio fendleri var. molestus Greenman Senecio nelsonii Rydberg Senecio rosulatus Rydberg Senecio salicinus
Treatment appears in FNA Volume 20. Treatment on page 587. Mentioned on page 574, 578, 593.
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Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). Stems 1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent. 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). Cauline leaves gradually reduced (sessile; lanceolate to oblanceolate, pinnatisect to wavy). Heads 6–25+ in open or compact, corymbiform arrays. Peduncles bracteate, densely to irregularly floccose. Calyculi 0 or inconspicuous (bractlets red-tinged). Phyllaries 13, green, 5–7 mm, floccose proximally to glabrescent distally. Ray florets 6–8+; corolla laminae 5–7 mm. Disc florets 30–40+; corolla tubes 2.5–3 mm, limbs, 2.5–3.5 mm. Cypselae 2.5–3 mm, glabrous; pappi 4–5 mm. 2n = 46.

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


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.

Selected References


Lower Taxa

... more about "Packera fendleri"
Debra K. Trock +
(A. Gray) W. A. Weber & Á. Löve +
Senecio fendleri +
Fendler’s ragwort +
Colo. +, N.Mex. +  and Wyo. +
1600–3200 m +
Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites +
Flowering late May–early Oct. +
Senecio canovirens +, Senecio fendleri var. molestus +, Senecio nelsonii +, Senecio rosulatus +  and Senecio salicinus +
Packera fendleri +
species +