Clematis carrizoensis D. Estes. Subgenus: Viorna. Carrizo Sands Leatherflower, Sand Clematis. Phen: Early May-early Aug; late Jun-Nov. Hab: Post oak savannas, margins of post oak woodlands, and sandy prairies in the Carrizo Sands. Dist: Endemic to the Carrizo Sands, in ne. TX (Cherokee, Henderson, Smith, and Van Zandt counties) (Estes 2006; Carr 2016).

Origin/Endemic status: Endemic

Taxonomy Comments: See Estes (2006) for detailed information.

Synonymy: = K3, K4, Estes (2006); = n/a – FNA3, S13

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Heliophily: 8