Cuthbertia graminea Small. Phen: May-Jul. Hab: Longleaf pine sandhills. Dist: Se. VA south through NC, SC, and GA to c. peninsula FL and e. FL Panhandle.
Origin/Endemic status: Endemic
Taxonomy Comments: Cuthbertia graminea includes three morphologically distinguishable cytological races, occupying different (but partially overlapping) ranges (Giles 1942, Giles 1943, Tucker 1989). The predominant race is tetraploid, occupying the outer Coastal Plain of VA, NC, and SC, middle Coastal Plain of NC and SC, fall-line Sandhills of SC, and south into FL. The diploid race is endemic to the fall-line Sandhills of sc. NC and nc. SC, a distribution similar to those of Pyxidanthera brevifolia, Liatris cokeri, and Lycopus cokeri. Rare hexaploids have been found at scattered sites in SC and FL. The tetraploid race averages about 25% larger than the diploid in most vegetative and floral characters, and is reported to exhibit a greater ecological amplitude (Giles 1942, 1943).
Synonymy: = S, Va, Bergamo (2003); = Callisia graminea (Small) G.C.Tucker – FNA22, K1, K4, WH3, Tucker (1989); = Tradescantia rosea Vent. var. graminea (Small) E.S.Anderson & Woodson – C, F, G, RAB