Apocynum sibiricum Jacq.

• Authority

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

• Family

  Apocynaceae

• Scientific Name

  Apocynum sibiricum Jacq.

• Description

  Species Description - Erect to sometimes nearly prostrate; lvs usually glabrous beneath, sessile or on short petioles rarely to 3 mm, the base broadly obtuse to rounded or often subcordate and clasping; infl and cal usually glabrous; cor greenish-white or pale yellow; otherwise as in no. 2. Open places; Nf. to N.J. and W.Va., w. to Man. and Mo., and to the Pacific, more common westward. May–Sept. (A. hypericifolium) Perhaps better treated as A. cannabinum var. hypericifolium A. Gray.

• Common Names

  clasping dogbane