Packera malmstenii

(S. F. Blake ex Tidestrom) Kartesz

in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. 21. 1999.

Common names: Podunk ragwort
EndemicConservation concern
Basionym: Senecio malmstenii S. F. Blake ex Tidestrom Proc. Biol. Soc. Wash. 36: 183. 1923
Treatment appears in FNA Volume 20. Treatment on page 591. Mentioned on page 571.

Perennials, 8–15+ cm; rhizomatous (rhizomes relatively slender, branched). Stems 1 or 3–5, loosely clustered, glabrous or bases and leaf axils tomentose. Basal leaves (and proximal cauline, relatively thick and turgid) petiolate (petioles sometimes winged); blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices). Cauline leaves abruptly reduced (becoming sessile, bractlike). Heads 1–2(–4). Peduncles ebracteate, glabrous. Calyculi inconspicuous. Phyllaries 13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally. Ray florets (0) or 8–13; corolla laminae 7–9 mm. Disc florets 35–50+; corolla tubes 2–3 mm, limbs 2.5–3.5 mm. Cypselae 1–2 mm, glabrous; pappi 3–4.5 mm.


Phenology: Flowering mid Jul–early Aug.
Habitat: Steep talus of limestone-derived slopes at or above timberline
Elevation: 2600–3600 m

Discussion

Of conservation concern.

Packera malmstenii is poorly known; it has obvious affinities with P. werneriifolia in both morphology and habitat preference. Its herbage tends to be thick and turgid.

Selected References

None.

Lower Taxa

None.
... more about "Packera malmstenii"
Debra K. Trock +
(S. F. Blake ex Tidestrom) Kartesz +
Senecio malmstenii +
Podunk ragwort +
Idaho +, Nev. +  and Utah. +
2600–3600 m +
Steep talus of limestone-derived slopes at or above timberline +
Flowering mid Jul–early Aug. +
in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. +
Endemic +  and Conservation concern +
Compositae +
Packera malmstenii +
species +