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Rudbeckia alismifolia Torrey & A. Gray. Rough Coneflower. Phen: Jun-Jul. Hab: Prairies, open woodlands. Dist: MS west to AR, LA, and TX; disjunct in KY. Reported for se. OK, based on a 1999 herbarium specimen (Kelley 2023).

Origin/Endemic status: Endemic

Synonymy: = Rudbeckia alismaefolia Torr. & A.Gray – S; = Rudbeckia grandiflora (Sweet) DC. var. alismaefolia – SE1, orthographic variant; = Rudbeckia grandiflora (Sweet) DC. var. alismifolia (Torr. & A.Gray) Cronquist – Ar, FNA21, K1, K3, K4, NcTx; < Rudbeckia grandiflora (Sweet) DC. – Tx

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