Geocarpon carolinianum (Walter) E.E. Schilling. Carolina Sandwort, Longroot. Phen: Apr-Jul. Hab: Deep white sands of barren longleaf pine sandhills, sand barrens, other dry sandy habitats, as in the NJ Pine Barrens. Dist: NY (Long Island) and formerly RI, to Panhandle FL, on the Coastal Plain.

Origin/Endemic status: Endemic

Synonymy: = Schilling et al (2022), in press; = Alsinopsis caroliniana (Walter) Small – S13; = Arenaria caroliniana Walter – C, F, G, RAB, Tat, Maguire (1951); = Minuartia caroliniana (Walter) Mattf. – FNA5, K1, K3, NE, Va, WH3; = Minuopsis caroliniana (Walter) W.A.Weber; = Mononeuria caroliniana – K4, Dillenberger & Rabeler (2018); = Sabulina caroliniana (Walter) Small – Fl4, NY, S, Dillenberger & Kadereit (2014)

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Heliophily: 9