Geocarpon uniflorum (Walter) E.E. Schilling. Phen: Apr-May. Hab: Granitic flatrocks, outcrops of Altamaha grit. Dist: S. NC south to c. GA, west to ec. AL, on the Piedmont and extending into the Coastal Plain of Georgia on Altamaha grit.

Origin/Endemic status: Endemic

Taxonomy Comments: Minuartia alabamensis, named on the basis of its tiny flowers, has been shown to be a self-pollinating form of Mononeuria uniflora which has arisen repeatedly and independently at various sites in the range of Mononeuria uniflora.

Synonymy: = Schilling et al (2022), in press; = Alsinopsis brevifolia (Nutt. ex Torr. & A.Gray) Small; = Arenaria uniflora (Walter) Muhl. – RAB, Maguire (1951); = Minuartia uniflora (Walter) Mattf. – FNA5, K1, K3; = Mononeuria uniflora (Walter) Dillenb. & Kadereit – K4, Dillenberger & Kadereit (2014); = Sabulina brevifolia (Nutt. ex Torr. & A.Gray) Small – S; > Arenaria alabamensis J.F.McCormick, Bozeman, & Spongberg – GW2, W; > Arenaria uniflora (Walter) Muhl. – GW2, W; > Minuartia alabamensis J.F.McCormick, Bozeman, & Spongberg

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