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Helianthus occidentalis Riddell ssp. plantagineus (Torrey & A. Gray) Heiser. Plantain-leaf Sunflower. Hab: Dry, open areas on sandstone outcrops and glades, Catahoula sandstone glades. Dist: Wc. AR south to w. LA and e. TX.

Origin/Endemic status: Endemic

Synonymy: = Ar, FNA21, K3, K4; = Helianthus occidentalis Riddell var. plantagineus Torr. & A.Gray – SE1; < Helianthus occidentalis Riddell – Tx

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