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Packera crocata (Rydb.) W.A.Weber & Á.Löve  
Family: Asteraceae
Saffron Groundsel
[Senecio crocatus Rydb., moreSenecio crocatus var. wolfii Greenm.]
Packera crocata image
  • FNA
  • Resources
Debra K. Trock in Flora of North America (vol. 20)
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. Flowering early Jul-mid Aug. Wet meadows, along trails, rocky outcrops; 1800-3500 m; Colo., Idaho, Nev., N.Mex., Utah, Wyo. 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.

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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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