All Floras      Advanced Search
FNA Vol. 19, 20 and 21 Page 113, 115, 116, 117 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Cirsium

12a. Cirsium pumilum (Nuttall) Sprengel var. pumilum

Cirsium odoratum (Muhlenberg ex W. P. C. Barton) Petrak

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. P hyllaries: 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.

Flowering summer (Jun–Sep). Fields, pastures, open woods, roadsides; 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).


Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |