Packera fendleri

(A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 46. 1981.

Common names: Fendler’s ragwort
Endemic
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.

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

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.

Selected References

None.

Lower Taxa

None.
... more about "Packera fendleri"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
corymbiform +, compact +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(A. Gray) W. A. Weber & Á. Löve +
tapering +
Senecio fendleri +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceolate;oblanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
winged;nerved;ribbed +
inconspicuous +
Fendler’s ragwort +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pale-yellow +  and deep orange-red +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +, N.Mex. +  and Wyo. +
1600–3200 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites +
discoid +  and radiate +
in compact or congested to open corymbiform cymiform or subumbelliform , , , arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
sessile +  and petiolate +
cauline +  and basal +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
evenly pinnatifid +  and pinnatisect or wavy +
2-carpellate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering late May–early Oct. +
glabrescent +  and floccose +
linear +  and ensiform +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
glabrescent +  and floccose-tomentose +
multiple +  and 1 +
appendaged +  and truncate +
papillate +
Senecio canovirens +, Senecio fendleri var. molestus +, Senecio nelsonii +, Senecio rosulatus +  and Senecio salicinus +
Packera fendleri +
species +
campanulate +
serrate +  and denticulate +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +