Grindelia lanceolata Nutt.

• 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

  Grindelia lanceolata Nutt.

• Description

  Species Description - Short-lived, monocarpic perennial sometimes sparsely hairy below, 3–15(–20) dm; lvs scarcely punctate, sharply serrate or serrulate with bristle-tipped teeth (seldom entire), acute to acuminate, the middle ones linear or lance-oblong, 4–11 cm × (2–)4–28 mm; disk 1–2 cm wide; invol bracts only slightly resinous, loose, not markedly imbricate; rays 15–30, 10–16 mm; achenes 4–6 mm; pappus-awns mostly 2, entire; 2n=12. Dry, open places, often on limestone; c. Tenn., s. Ind., and s. Ill. to Kans., Tex., and N.M. June–Sept. Ours is var. lanceolata.

• Common Names

  spiny-toothed gum-weed