| Author | Hooker & Arnott ex Nuttall | |
| Distribution | Note: Weakley (2020) treats this as A. rubrum var. drummondii. He does not map it for NC or anywhere else east of the Mississippi River Basin: "reports from more eastern areas likely represent pubescent extremes of S. rubrum var. trilobum". Sorrie, who has seen its densely white-pubescent leaf undersides in Louisiana swamplands, agrees. We therefore do not credit it to the NC flora.
This is a Southern taxon limited mainly to the Mississippi drainage. | |
| Abundance | Not found in NC. | |
| Habitat | This taxon is a strongly wetland one, occurring mainly in swamps and other deeply flooded sites. | |
| Phenology | Uncertain, but probably similar to that of the Red Maple (Acer rubrum), "flowering" very early, from January to March, and fruiting from February to June. | |
| Identification | Weakley (2018) indicates that it is similar to Red Maple, but Drummond's Maple has leaves that are "densely white tomentose (felty-pubescent) beneath, as opposed to "glabrous to densely pubescent (but not white-tomentose) beneath". Also, the first species has petioles with with tomentose hairs and with larger samaras (fruit), 1-2" long; the last (Red Maple) has the leaf stalks usually glabrous and the fruit mostly 0.7-1.2" long (thus mostly 1" across or less). As with Red Maple, the species is a medium deciduous tree that will have to been seen closely to examine the leaves. | |
| Taxonomic Comments | Many references treat this taxon as a Red Maple variety -- A. rubrum var. drummondii, but some apparently simply include it within A. rubrum.
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| Other Common Name(s) | Drummond's Red Maple (mainly used when considering this as a variety), Swamp Red Maple. | |
| State Rank | SYN | |
| Global Rank | G5T5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
