Artemisia biennis Willd.

• 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

  Artemisia biennis Willd.

• Description

  Species Description - Coarse, nearly inodorous, glabrous annual or biennial 3–30 dm; lvs 5–15 cm, pinnatisect nearly to the midrib into several narrow lobes that are usually again sharply toothed, or the lower bipinnatifid; infl dense, spike-like or of spiciform branches, the heads usually numerous, crowded, scarcely pedunculate; invol glabrous, 2–3 mm; achenes ellipsoid, 4–5-nerved; 2n=18. Waste places and stream-banks, especially in sandy soil; native to nw. U.S. but widely distributed in our range and elsewhere as a weed. Aug.–Oct.

• Common Names

  biennial wormwood