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Packera cardamine
(Greene) W.A. Weber & A. Löve
Family:
Asteraceae
Bitter-Cress Groundsel,
more...
bittercress ragwort
[
Senecio cardamine
Greene]
Russ Kleinman
FNA
Resources
Debra K. Trock in Flora of North America (vol. 20)
Perennials,
20-60+ cm; rhizomatous (rhizomes erect to ascending, stout).
Stems
1, glabrous.
Basal leaves
petiolate; blades orbiculate-ovate, orbiculate, obovate, or subreniform, 30-80+ × 30-80+ mm, bases cordate to contracted, margins crenate, dentate, or wavy.
Cauline leaves
abruptly reduced (proximal petiolate or sessile and clasping, broadly lanceolate, irregularly incised or crenate; mid ones sessile, clasping, sometimes auriculate, oblong to hastate, irregularly dentate; distal bractlike, entire).
Heads
3-8 in open, cymiform arrays.
Peduncles
conspicuously bracteate, glabrous.
Calyculi
conspicuous.
Phyllaries
13, light green, 5-9+ mm, glabrous.
Ray florets
usually 8+, rarely 0; corolla laminae 8-11 mm.
Disc florets
30-45+; corolla tubes 4-5 mm, limbs 6-7 mm.
Cypselae
1.5-2 mm, glabrous;
pappi
9-10 mm.
Flowering mid Jun-late Jul. Canyons, meadows, spruce forests; of conservation concern; 2400-3200 m; Ariz., N.Mex.
Packera cardamine
is uncommon, rarely collected, and known only from the Mogollon Mountains of New Mexico and the White Mountains of Arizona.
Russ Kleinman
Russ Kleinman
Russ Kleinman
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