Cirsium pumilum var. pumilum

Endemic
Synonyms: Cirsium odoratum (Muhlenberg ex W. P. C. Barton) Petrak
Treatment appears in FNA Volume 19. Treatment on page 116. Mentioned on page 113, 115, 117.

Plants mostly 30–100 cm; branches 3–5+, long. Roots usually slender, not or rarely slightly tuberous-thickened. Leaves usually lobed nearly to midveins, sinuses deep, U-shaped, main spines ± stout, 3–7 mm. Heads 5.5–6 cm. Phyllaries: outer 3–5 mm wide at base, spines stout, 3–6 mm. Corollas usually 40–45 mm. Cypselae usually 3.5–4 mm. 2n = 30.


Phenology: Flowering summer (Jun–Sep).
Habitat: Fields, pastures, open woods, roadsides
Elevation: 0–600 m

Distribution

V19-67-distribution-map.gif

Conn., Del., Maine, Md., Mass., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Vt., Va., W.Va.

Discussion

Variety pumilum grows on the Atlantic coastal plain from Maine to South Carolina and ranges inland to Pennsylvania and Ohio. It is known to hybridize with Cirsium horridulum var. horridulum (R. J. Moore and C. Frankton 1966).

Selected References

None.

Lower Taxa

None.

"fine" is not a number."[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property."broad" is not a number.

middle +  and outer +
arachnoid +  and villous +
subglabrous +, tomentose +, arachnoid +  and villous +
short-tailed +
spineless +  and twisted +
dentate +, entire +  and spine-tipped +
ascending +  and spreading +
innermost +
scarious +
colored +  and yellow +
corymbiform +, paniculiform +, subcapitate +, spiciform +  and racemiform +
indeterminate +  and determinate +
David J. Keil +
(Nuttall) Sprengel +
auriculate-clasping +
tapered +
Carduus pumilus +
compound +  and simple +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
less undulate;shallowly deeply pinnatifid +
2cm;10cm +
10-nerved or 20-nerved +  and rugose +
tawny +  and white +
actinomorphic +
pink +  and purple +
4 cm40 mm <br />0.04 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
stramineous +  and brown +
compressed +  and ovoid +
fertile +  and bisexual +
Conn. +, Del. +, Maine +, Md. +, Mass. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Vt. +, Va. +  and W.Va. +
0–600 m +
gray-canescent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Fields, pastures, open woods, roadsides +
indeterminate +
5.5 cm55 mm <br />0.055 m <br /> (6 cm60 mm <br />0.06 m <br />) +
each +  and sessile +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
broadly cylindric;ovoid +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
bristle-tipped +
lobed +, spinose-dentate +, ovate +  and broadly triangular +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
entire +  and dentate +
usually lobed +  and dissected +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-carpellate +
persistent +
3.5 cm35 mm <br />0.035 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering summer (Jun–Sep). +
middle +  and outer +
weakly to strongly +
papillate +  and smooth +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
glutinous +
slender +
tuberous-thickened +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spiny-winged +, simple +  and branched +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Cirsium odoratum +
Cirsium pumilum var. pumilum +
Cirsium pumilum +
variety +
cylindric +
expanded +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
flexuous +
erose-denticulate +
expanded +
bristly-dentate to coarsely +
slender +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
perennial +, perennating +  and biennial +
25 cm250 mm <br />0.25 m <br /> (100 cm1,000 mm <br />1 m <br />) +