Chelone obliqua Linnaeus var. erwiniae Pennell & Wherry. Mountain Purple Turtlehead, Erwin’s Turtlehead. Phen: Jul-Oct; Sep-Nov. Hab: Streambanks, swamp forests. Dist: Sw. NC and nw. SC.
Origin/Endemic status: Endemic
Other Comments: Var. erwiniae is tetraploid; the other varieties are hexaploid (Nelson, Elisens, & Benish 1998).
Synonymy: = FNA17, K1, K3, K4; = Chelone obliqua L. ssp. erwiniae (Pennell & Wherry) Pennell – Pennell (1935); < Chelone obliqua L. – GW2, RAB, S, W
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