Packera multilobata

(Torrey & A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 47. 1981.

Common names: Lobeleaf Groundsel
Endemic
Basionym: Senecio multilobatus Torrey & A. Gray Mem. Amer. Acad. Arts, n. s. 4: 109. 1849
Synonyms: Senecio leucoreus Greenman Senecio lynceus Greene Senecio nelsonii var. uintahensis A. Nelson Senecio prolixus Greenman Senecio stygius Greene Senecio thornberi Greenman Senecio uintahensis (A. Nelson) Greenman
Treatment appears in FNA Volume 20. Treatment on page 592. Mentioned on page 575, 598.

Biennials or perennials, 20–40+ cm; taprooted (caudices ascending to erect, weakly branched). Stems 1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose. Basal leaves (and proximal cauline) petiolate; blades obovate, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate. Cauline leaves gradually reduced (sessile). Heads 10–30+ in open, corymbiform or subumbelliform arrays. Peduncles conspicuously bracteate, glabrous or tomentose. Calyculi conspicuous. Phyllaries 13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally). Ray-florets 8–13; corolla laminae 7–10 mm. Disc-florets 40–50+; corolla-tubes 4–5 mm, limbs 3–4 mm. Cypselae 2–3 mm, glabrous or hirtellous on ribs; pappi 5–6 mm. 2n = 46, 92.


Phenology: Flowering early May–mid Jul.
Habitat: Dry rocky or sandy soils in sagebrush, woodlands, and subalpine areas
Elevation: 1200–2900 m

Distribution

V20-1323-distribution-map.gif

Ariz., Calif., Colo., Idaho, Nev., N.Mex., Utah, Wyo.

Discussion

Packera multilobata is abundant and widespread west of the Continental Divide. Both morphology and habitat vary. In colder parts of its range, plants are shorter, caudices are better developed with clustered stems, and leaf lobes are larger. In desert-like habitats, basal leaves are narrower and more finely lobed, the tomentum is often persistent, and stems are usually single.

Selected References

None.

Lower Taxa

None.
... more about "Packera multilobata"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
subumbelliform +, corymbiform +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(Torrey & A. Gray) W. A. Weber & Á. Löve +
tapering +
Senecio multilobatus +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
lyrate;sublyrate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
winged;nerved;ribbed +
Lobeleaf Groundsel +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pale-yellow +  and deep orange-red +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hirtellous +  and glabrous +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Idaho +, Nev. +, N.Mex. +, Utah +  and Wyo. +
1200–2900 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry rocky or sandy soils in sagebrush, woodlands, and subalpine areas +
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 +
2-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
tomentose +  and glabrous +
Flowering early May–mid Jul. +
tomentose +  and glabrous +
linear +  and ensiform +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
tomentose +, glabrescent +  and glabrous +
2 +  and 5 +
appendaged +  and truncate +
papillate +
Senecio leucoreus +, Senecio lynceus +, Senecio nelsonii var. uintahensis +, Senecio prolixus +, Senecio stygius +, Senecio thornberi +  and Senecio uintahensis +
Packera multilobata +
species +
campanulate +
incised +  and dentate +
perennial +  and biennial +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +