Packera crocata

(Rydberg) W. A. Weber & Á. Löve

Phytologia 49: 46. 1981.

Common names: Saffron ragwort
Endemic
Basionym: Senecio crocatus Rydberg Bull. Torrey Bot. Club 24: 299. 1897,
Synonyms: Senecio pyrrhochrous Greene Senecio tracyi Rydberg
Treatment appears in FNA Volume 20. Treatment on page 583. Mentioned on page 572, 573, 585.

Perennials, 20–60+ cm; perennating bases horizontal to ascending (relatively long and stout). Stems usually 1, rarely 2–3, clustered, glabrous. Basal leaves (and proximal cauline) petiolate (petioles narrow); blades narrowly lanceolate or ovate to oblong-ovate, 20–60+ × 10–40+ mm, bases abruptly contracted to tapering, margins subentire to crenate-dentate. Cauline leaves gradually reduced (sessile, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed). Heads 7–15+ in open, corymbiform arrays. Peduncles ebracteate or bracteate (bractlets inconspicuous), glabrous. Calyculi 0 or inconspicuous. Phyllaries 13 or 21, light green (or tips cyanic), 4–8 mm, glabrous. Ray-florets 8 or 13; corolla laminae (deep yellow to orange-red) 6–8+ mm. Disc-florets 60–80+; corolla-tubes 4.5–5.5 mm, limbs 2.5–3.5 mm. Cypselae 1–1.5 mm, glabrous; pappi 3–5 mm. 2n = 46.


Phenology: Flowering early Jul–mid Aug.
Habitat: Wet meadows, along trails, rocky outcrops
Elevation: 1800–3500 m

Distribution

V20-1296-distribution-map.gif

Colo., Idaho, Nev., N.Mex., Utah, Wyo.

Discussion

Packera crocata is characterized by deep yellow to reddish orange corollas. Some collectors have noted that there may be evidence for hybridization between P. crocata and P. dimorphophylla; the relationship between the two species needs further study.

Selected References

None.

Lower Taxa

None.
... more about "Packera crocata"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
corymbiform +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(Rydberg) W. A. Weber & Á. Löve +
perennating +
horizontal +  and ascending +
tapering +
Senecio crocatus +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
ovate;oblong-ovate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
winged;nerved;ribbed +
inconspicuous +
Saffron ragwort +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
pale-yellow +  and deep orange-red +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +, Idaho +, Nev. +, N.Mex. +, Utah +  and Wyo. +
1800–3500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Wet meadows, along trails, rocky outcrops +
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 +
subentire +  and crenate-dentate +
2-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bracteate +  and ebracteate +
Flowering early Jul–mid Aug. +
linear +  and ensiform +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
2 +  and 3 +
appendaged +  and truncate +
papillate +
Senecio pyrrhochrous +  and Senecio tracyi +
Packera crocata +
species +
campanulate +
serrate +  and denticulate +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +