Packera spellenbergii

(T. M. Barkley) C. Jeffrey

Kew Bull. 47: 101. 1992.

Common names: Carrizo Creek ragwort
EndemicConservation concern
Basionym: Senecio spellenbergii T. M. Barkley Phytologia 67: 248, fig. 5. 1989
Synonyms: Senecio cliffordii N. D. Atwood & S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 599. Mentioned on page 576.
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Perennials, 3–6+ cm; fibrous-rooted and/or rhizomatous (bases coarse, weakly creeping or suberect). Stems usually 1, sometimes 2, densely tomentose (at least proximally), becoming glabrate distally. Basal leaves (relatively leathery) sessile; blades linear, 10–15+ × 1–2 mm, margins entire (revolute). Cauline leaves abruptly reduced (linear, bractlike). Heads 1(–2). Peduncles bracteate, tomentose or glabrate. Calyculi conspicuous. Phyllaries 13, purple to deep reddish purple, 6–9+ mm, hairy or glabrescent. Ray florets 0 or 5–8; corolla laminae 4–7 mm. Disc florets 30–40+; corolla tubes 2.5–3.5 mm, limbs 3.5–4 mm. Cypselae 3–3.5 mm, hirtellous; pappi 5–6 mm.

Phenology: Flowering mid Apr–mid May.
Habitat: Calcareous soils, sparsely vegetated areas of short-grass prairies
Elevation: 1600–2200 m


Of conservation concern.

Packera spellenbergii is known only from Harding and Union counties, New Mexico, and Kane County, Utah. The plants are succulent, have deeply cyanic herbage, and conspicuously revolute leaves.

Selected References


Lower Taxa

... more about "Packera spellenbergii"
Debra K. Trock +
(T. M. Barkley) C. Jeffrey +
Senecio spellenbergii +
Carrizo Creek ragwort +
N.Mex. +  and Utah. +
1600–2200 m +
Calcareous soils, sparsely vegetated areas of short-grass prairies +
Flowering mid Apr–mid May. +
Endemic +  and Conservation concern +
Senecio cliffordii +
Packera spellenbergii +
species +