Packera clevelandii

(Greene) W. A. Weber & Á. Löve

Phytologia 49: 46. 1981.

Common names: Cleveland’s ragwort
Endemic
Basionym: Senecio clevelandii Greene Bull. Torrey Bot. Club 10: 87. 1883 (as clevelandi)
Synonyms: Senecio clevelandii var. heterophyllus Hoover
Treatment appears in FNA Volume 20. Treatment on page 582. Mentioned on page 572.

Perennials, 30–80+ cm; taprooted (caudices suberect to erect, stout). Stems usually 1 (sometimes more, clustered), glaucous. Basal leaves (and proximal cauline, relatively thick and turgid) petiolate; blades lanceolate to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire. Cauline leaves gradually reduced (sessile and weakly clasping; lanceolate, entire). Heads 12–20+ in open, corymbiform arrays. Peduncles conspicuously bracteate, glaucous. Calyculi conspicuous. Phyllaries (13) 21, green (tips often purple), glabrous. Ray-florets 8–10 (–13); corolla laminae 5–7 mm. Disc-florets 25–40+; corolla-tubes 2–3 mm, limbs 3–4 mm. Cypselae 1–1.5 mm, glabrous; pappi 5–6 mm. 2n = 46.


Phenology: Flowering mid Jun–mid Jul.
Habitat: Rocky, serpentine soils, open, dry, shrubby areas, dry streambeds
Elevation: 300–700 m

Discussion

Packera clevelandii is known only from the North Coast Ranges and foothills of the Sierra Nevada on serpentine soils in chaparral communities. It is the only Packera with subsucculent, glaucous herbage.

Selected References

None.

Lower Taxa

None.
... more about "Packera clevelandii"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
corymbiform +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(Greene) W. A. Weber & Á. Löve +
tapering +
Senecio clevelandii +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
lanceolate;narrowly oblanceolate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
winged;nerved;ribbed +
Cleveland’s 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 +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
300–700 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky, serpentine soils, open, dry, shrubby areas, dry streambeds +
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 +
subentire +  and entire +
2-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering mid Jun–mid Jul. +
linear +  and ensiform +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
appendaged +  and truncate +
papillate +
Senecio clevelandii var. heterophyllus +
Packera clevelandii +
species +
campanulate +
serrate +  and denticulate +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +