Prenanthes autumnalis Walter

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Asteraceae

• Scientific Name

  Prenanthes autumnalis Walter

• Description

  Species Description - Plants 4–14 dm, glabrous throughout; basal and lowermost cauline lvs elongate, 7–35 × 1–12 cm, few-toothed to generally pinnately lobed, the lobes often rather narrow and distant; cauline lvs conspicuously reduced upward, often becoming linear and entire; infl very narrow and elongate, either subracemiform, or in more robust plants with closely ascending, subracemiform branches; heads nodding; invol 10–13 mm, generally purplish, without long hairs, with mostly 8 principal bracts, the reduced outer ones often passing into those of the slender peduncle; fls (8–)10–11(–13), pink or pale lavender; pappus stramineous. Sandy, usually moist places, often among pines; coastal plain from N.J. to n. Fla. Aug.–Oct. (P. virgata)

• Common Names

  slender rattlesnake-root