Sisymbrium loeselii L.

• Authority

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

• Family

  Brassicaceae

• Scientific Name

  Sisymbrium loeselii L.

• Description

  Species Description - Erect, 5–12 dm, the stem generally reflexed-hirsute below; lower lvs lyrate-pinnatifid and dentate, usually hirsute, the lateral segments triangular to ovate, acute, spreading or deflexed, the terminal one larger, triangular; infl elongating progressively, the fls and buds overtopping the frs; sep 3–4 mm; pet lemon-yellow, 5–8 mm; anthers ca 1.5 mm; mature pedicels divergent, 5–20 mm; frs ascending to erect, slender, terete, 1.5–4 cm; 2n=14. Native of se. Europe and w. Asia, occasionally found in our range, and becoming a weed in w. U.S. June–Aug.

• Common Names

  tall hedge-mustard