Trillium pusillum Michaux var. 4 . Subgenus: Delostylis. Carolina Least Trillium. Hab: Swampy forests, bottomland forests along small streams in the upper Coastal Plain and Piedmont-Coastal Plain fall-line transition zone. Dist: E. NC (upper Coastal Plain and adjacent Piedmont), moist mafic areas in Grayson Co. VA.
Origin/Endemic status: Endemic
Taxonomy Comments: Under study by Farmer, Schilling, and Floden.
Other Comments: The Grayson County site is within a kilometer of the Alleghany County, NC border, and the plant may be found to also occur in nw. NC. Petals white to pink.
Synonymy: = Trillium carolinianum, in prep.; < Trillium pusillum Michx. – RAB, S, S13, Timmerman-Erskine, Dute, & Boyd (2002); < Trillium pusillum Michx. var. virginianum Fernald – F, K3, K4, Va, Case & Case (1997)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
Heliophily ?: 2
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