Galeopsis ladanum L.

• Authority

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

• Family

  Lamiaceae

• Scientific Name

  Galeopsis ladanum L.

• Description

  Species Description - Stems freely branched, 1–4 dm, finely pubescent with minute, recurved hairs, often with spreading glandular hairs as well, but not hispid-setose; lvs 1.5–3 cm; verticils usually 2–4, few- fld; cal-lobes half as long as the canescent tube, only 3 mm even in fr; cor deep pink, 15–28 mm; 2n=16. Native of Eurasia, intr. in waste places or along the seashore, chiefly in the coastal states, but sometimes inland to Wis. June–Sept. Var. ladanum has lanceolate to ovate lvs to 15 mm wide and crenate-serrate with a few low teeth. (Var. latifolia) Var. angustifolia (Ehrh.) Wallr., much more common with us, has mostly linear and entire lvs rarely over 5 mm wide. (G. angustifolia)