Gonolobus suberosus (Linnaeus) R. Brown var. suberosus . Phen: Jun-Aug; Sep-Nov. Hab: Mesic to wet forests and thickets. Dist: E. MD south to s. peninsular FL, west to s. MS, inland to nw. GA and c. KY; disjunct in c. AR (Saline County).
Origin/Endemic status: Endemic
Taxonomy Comments: Rosatti (1989) and Drapalik (1969) expressed considerable doubt about whether two species should be recognized; their view, supporting the recognition of a single species in our area, is followed here for now. However, studies by Krings & Xiang (2004, 2005) suggested that two entities should be circumscribed at the varietal level. Drapalik (1969) considered the basionym "suberosa" as not applicable to Matelea of North America; Reveal & Barrie (1992) lectotypified the name, resulting in it applying to our material. The epithet "suberosus" has priority over "gonocarpus".
Synonymy: = K3, K4, Va, Krings & Xiang (2005), Krings (2008); = Gonolobus gonocarpus (Walter) L.M.Perry – Rosatti (1989); = Matelea gonocarpa (Walter) Shinners – Drapalik (1969); > Gonolobus gonocarpos – G; > Gonolobus gonocarpus (Walter) L.M.Perry – F; < Gonolobus suberosus (L.) R.Br. – Fl5, Tn, WH3; > Gonolobus suberosus (L.) R.Br. – F, Lipow & Wyatt (1998); > Matelea gonocarpa (Walter) Shinners – C, RAB, W; < Matelea gonocarpos (Walter) Shinners – K1; > Matelea suberosa (L.) Shinners – C, RAB, W; < Vincetoxicum gonocarpos Walter – S; > Vincetoxicum suberosum (L.) Britton – S