Packera cardamine

(Greene) W. A. Weber & Á. Löve

Phytologia 49: 46. 1981.

Common names: Bittercress ragwort
IllustratedEndemicConservation concern
Basionym: Senecio cardamine Greene Bull. Torrey Bot. Club 8: 98. 1881
Treatment appears in FNA Volume 20. Treatment on page 581. Mentioned on page 572.

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.


Phenology: Flowering mid Jun–late Jul.
Habitat: Canyons, meadows, spruce forests
Elevation: 2400–3200 m

Discussion

Of conservation concern.

Packera cardamine is uncommon, rarely collected, and known only from the Mogollon Mountains of New Mexico and the White Mountains of Arizona.

Selected References

None.

Lower Taxa

None.
... more about "Packera cardamine"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
cymiform +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(Greene) W. A. Weber & Á. Löve +
cordate +
Senecio cardamine +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
subreniform;obovate;subreniform;obovate;orbiculate;orbiculate-ovate +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
winged;nerved;ribbed +
Bittercress ragwort +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pale-yellow +  and deep orange-red +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +  and N.Mex. +
2400–3200 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Canyons, meadows, spruce forests +
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 to pinnatifid +  and entire +
wavy +, dentate +  and crenate +
2-carpellate +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering mid Jun–late Jul. +
linear +  and ensiform +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
Illustrated +, Endemic +  and Conservation concern +
prostrate +  and ascending +
appendaged +  and truncate +
papillate +
Compositae +
Packera cardamine +
species +
campanulate +
serrate +  and denticulate +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +