Acer rubrum Linnaeus var. drummondii (Hooker & Arnott ex Nuttall) Sargent. Section: Rubra. Drummond’s Maple, Swamp Red Maple, Drummond’s Red Maple. Phen: Jan-Mar; Mar-Jun. Hab: Swamps and floodplains, often in deeply flooded situations. Dist: A. rubrum var. drummondii is probably limited to the Mississippi River basin and its immediate tributaries; reports from more eastern areas likely represent pubescent extremes of Acer rubrum var. trilobum.
Origin/Endemic status: Endemic
Taxonomy Comments: Saeki et al. (2011) show some (chloroplast) gene exchange between Acer rubrum var. drummondii and A. saccharinum. Additional study of the Acer rubrum complex is needed.
Synonymy: = Ar, F, G, K1, K3, K4, Mo2, Tx; = Acer drummondii Hook. & Arn. ex Nutt. – Il, Tn; = Acer rubrum L. ssp. drummondii (Nutt.) A.E.Murray – Murray (1970); = Rufacer drummondii (Hook. & Arn. ex Nutt.) Small – S; < Acer rubrum L. – C, GW2, NcTx, RAB, Va, WH3
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