Lysimachia thyrsiflora L.

• Authority

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

• Family

  Primulaceae

• Scientific Name

  Lysimachia thyrsiflora L.

• Description

  Species Description - Erect, 3–7 dm, from long, stoloniform rhizomes; lvs punctate, narrowly lanceolate to linear, 5–12 cm; infl a few dense, short racemes 1–3 cm on spreading peduncles 2–4 cm arising from the middle axils; fls mostly 6-merous; cal-lobes narrowly lanceolate, 2.5 mm; cor-lobes linear, 4–5 mm, marked with black; stamens separate, erect, nearly twice as long as the pet; 2n=54. Swamps; circumboreal, s. to N.J., O. and Mo. (Naumburgia t.)

• Common Names

  swamp-loosestrife