Cirsium pumilum var. pumilum

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



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


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


Lower Taxa

David J. Keil +
(Nuttall) Sprengel +
Carduus pumilus +
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 +
Fields, pastures, open woods, roadsides +
Flowering summer (Jun–Sep). +
Cirsium odoratum +
Cirsium pumilum var. pumilum +
Cirsium pumilum +
variety +