Difference between revisions of "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.
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|code=E
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|label=Endemic
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|publication year=1981
 
|publication year=1981
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|special status=Endemic
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|tribe=Asteraceae tribe Senecioneae
 
|tribe=Asteraceae tribe Senecioneae
 
|genus=Packera
 
|genus=Packera

Revision as of 20:44, 27 May 2020

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

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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"
Debra K. Trock +
- Rydberg W. A. Weber & Á. Löve +
Senecio crocatus +
Saffron ragwort +
Colo. +, Idaho +, Nev. +, N.Mex. +, Utah +  and Wyo. +
1800–3500 m +
Wet meadows, along trails, rocky outcrops +
Flowering early Jul–mid Aug. +
Senecio pyrrhochrous +  and Senecio tracyi +
Packera crocata +
species +