Packera malmstenii

(S. F. Blake ex Tidestrom) Kartesz in J. T. Kartesz and C. A. Meacham

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"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
congested +  and open corymbiform cymiform or subumbelliform +
indeterminate +  and determinate +
Debra K. Trock +
(S. F. Blake ex Tidestrom) Kartesz in J. T. Kartesz and C. A. Meacham +
tapering +
Senecio malmstenii +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
suborbiculate;spatulate +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
winged;nerved;ribbed +
inconspicuous +
Podunk ragwort +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pale-yellow +  and deep orange-red +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Idaho +, Nev. +  and Utah. +
2600–3600 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Steep talus of limestone-derived slopes at or above timberline +
discoid +  and radiate +
in compact or congested to open corymbiform cymiform or subumbelliform , , , arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
sessile +  and petiolate +
cauline +  and basal +
erect;recurved +
deltate +
dentate +  and entire +
2-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Flowering mid Jul–early Aug. +
tomentose +  and glabrous +
linear +  and ensiform +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl. innov. +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
Endemic +  and Conservation concern +
prostrate +  and ascending +
3 +  and 5 +
appendaged +  and truncate +
papillate +
Compositae +
Packera malmstenii +
species +
campanulate +
serrate +  and denticulate +
8 cm80 mm <br />0.08 m <br /> (15 cm150 mm <br />0.15 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +