Eryngium ravenelii A. Gray. Ravenel's Eryngo. Phen: Jul-Sep. Hab: Wet pine savannas, mostly or entirely over calcareous substrate. Dist: Se. SC (Berkeley and Charleston counties) south to sw. GA and s. FL. Reports for se. NC are based on inland populations of E. aquaticum.
Origin/Endemic status: Endemic
Taxonomy Comments: McMillan's (2003) suggestion that E. ravenelii warrants specific status distinct from E. aquaticum is followed.
Synonymy: = S; = Eryngium aquaticum L. var. ravenelii (A.Gray) Mathias & Constance – K1, K3, K4, RAB, Bell (1963); < Eryngium aquaticum L. – Fl7, GW2, WH3; > Eryngium aquaticum L. var. floridanum (Coult. & Rose) Mathias & Constance – MC; > Eryngium aquaticum L. var. ravenellii (A.Gray) Mathias & Constance – MC, orthographic error; ~ Eryngium praealtum Ravenel
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