Packera anonyma

(Alph. Wood) W. A. Weber & Á. Löve

Phytologia 49: 45. 1981.

Common names: Small’s ragwort
IllustratedEndemic
Basionym: Senecio anonymus Alph. Wood Class-book Bot. ed. s.n.(b), 464. 1861
Synonyms: Senecio aureus var. angustifolius Britton Senecio earlei Small Senecio smallii Britton
Treatment appears in FNA Volume 20. Treatment on page 578. Mentioned on page 573, 592.

Perennials, 30–70+ cm; fibrous-rooted (caudices erect to ascending). Stems 1 or 2–5, loosely clustered, bases densely tomentose, leaf-axils usually tomentose. Basal leaves petiolate; blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous). Cauline leaves gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid). Heads 20–70 (–100+) in corymbiform arrays. Peduncles bracteate, distally tomentose. Calyculi inconspicuous. Phyllaries 13 or 21, light green, 3–5 mm, glabrous. Ray-florets 8 or 13; corolla laminae 5–7+ mm. Disc-florets 45–60+; corolla-tubes 1.5–2 mm, limbs 1.5–2 mm. Cypselae 0.75–1 mm, hirsute on ribs; pappi 2.5–3 mm. 2n = 44.


Phenology: Flowering early Jun–mid Jul (north), early Apr–late May (south).
Habitat: Open fields, meadows, roadsides, disturbed sites, in drying or sandy soils
Elevation: 50–1800 m

Distribution

V20-1283-distribution-map.gif

Ala., Ark., D.C., Fla., Ga., Ky., La., Md., Miss., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.

Discussion

Packera anonyma is common, almost weedy throughout most of its range. It grows on serpentine in Maryland, Ohio, and Pennsylvania. In western parts of its range, putative hybrids between P. anonyma and P. plattensis and P. tomentosa have been reported.

Selected References

None.

Lower Taxa

None.
... more about "Packera anonyma"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Debra K. Trock +
(Alph. Wood) W. A. Weber & Á. Löve +
tapering +
Senecio anonymus +
3 cm30 mm <br />0.03 m <br /> (9 cm90 mm <br />0.09 m <br />) +
narrowly elliptic;oblanceolate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
winged;nerved;ribbed +
inconspicuous +
Small’s ragwort +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 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 +
Ala. +, Ark. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Miss. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +, Va. +  and W.Va. +
50–1800 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open fields, meadows, roadsides, disturbed sites, in drying or sandy soils +
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 +
serrate +  and crenate-serrate +
2-carpellate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering early Jun–mid Jul (north), early Apr–late May (south). +
linear +  and ensiform +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
Illustrated +  and Endemic +
prostrate +  and ascending +
2 +  and 5 +
appendaged +  and truncate +
papillate +
Senecio aureus var. angustifolius +, Senecio earlei +  and Senecio smallii +
Packera anonyma +
species +
campanulate +
serrate +  and denticulate +
30 cm300 mm <br />0.3 m <br /> (70 cm700 mm <br />0.7 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +