Quercus margaretiae Ashe ex Small. Subgenus: Quercus. Section: Quercus. Subsection: Stellatae. Sand Post Oak, Margaret's Oak. Phen: Apr; Sep-Nov (of the same year). Hab: Longleaf pine sandhills, typically in slightly loamy or clayey soils, not usual in the deepest and most xeric sands; outside of the distribution of Pinus palustris, in deep sandy, loamy, or rocky sites; also dry bluff forests. Dist: Primarily a species of the Southeastern Coastal Plain: se. VA south to FL and west to c. TX and OK.

Origin/Endemic status: Native

Taxonomy Comments: As stated by Fernald (1950), this oak was "chivalrously named [by W.W. Ashe] in 1903 for Margaret Henry Wilcox, who two years later became Mrs. Ashe". There has been controversy, however, over the spelling of the specific epithet; it should be corrected to 'margaretiae' (Weakley & McCormick 2020).

Synonymy: Quercus margaretta – Ar, orthographic variant; = Quercus margaretta – C, FNA3, G, RAB, S, S13, Tn, WH3, orthographic variant; = Quercus margarettae Ashe ex Small – Fl2, K3, K4, Va, orthographic variant; = Quercus margarettiae Ashe ex Small – K1, NcTx, orthographic variant; = Quercus stellata Wangenh. var. margaretta (Ashe ex Small) Sarg. – F, GrPl, orthographic variant; > Quercus drummondii Liebm. – Tx; > Quercus margaretta – Tx

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Heliophily: 8