Heracleum mantegazzianum Sommier & Levier. Giant Hogweed. Phen: Jun-Aug. Hab: Disturbed areas, pastures. Dist: Native of the Caucasus Mountains. Introduced and well-established in ne. North America; recently found in NC (Poindexter, Weakley, & Denslow 2011). Recently reported as persistent and spreading from plantings in Clarke County, VA (J. Metzgar, pers. comm., 2018).
Origin/Endemic status: W. Asia
Syn: = C, FNA, Il, K1, K3, K4, Mi, NE, NY, Pa; = n/a – F, G, RAB