Packera spellenbergii

(T. M. Barkley) C. Jeffrey

Kew Bull. 47: 101. 1992.

Common names: Carrizo Creek ragwort
Basionym: Senecio spellenbergii T. M. Barkley
Synonyms: Senecio cliffordii N. D. Atwood & S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 599. Mentioned on page 576.
Revision as of 01:32, 27 July 2019 by FNA>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

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

Discussion

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

None.

Lower Taxa

None.