Clematis socialis Kral
Family: Ranunculaceae
Alabama leather flower
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Stems erect, not viny, 0.2-0.3(-0.5) m, glabrous or slightly pubescent, arising from horizontal, branching rhizomes and forming patches. Leaves: proximal simple, blades unlobed or 2-3-lobed, distal blades 1-pinnate; leaflets and unlobed blades linear-elliptic to narrowly lanceolate or oblanceolate, (3-)4-12(-15) × (0.3-)0.5-1(-1.5) cm, thin, not prominently reticulate; surfaces abaxially nearly glabrous to sparsely villous on veins, not glaucous. Inflorescences terminal, flowers solitary; bracts absent. Flowers narrowly urn-shaped; sepals uniformly violet-blue, oblong-lanceolate, 2-2.5(-3) cm, margins narrowly expanded distally to about 1 mm wide, thin, crispate, proximally tomentose, tips spreading to recurved, acute to acuminate, abaxially sparsely puberulent. Achenes: bodies appressed-puberulent; beak 1.5-2.5 cm, appressed-puberulent. Flowering spring-fall. Openings in wet bottomland woods; of conservation concern; 200 m; Ala. Clematis socialis , the only species of Clematis subg. Viorna in the flora with horizontal, patch-forming rhizomes, is known only from three small populations in St. Clair and Cherokee counties south of Ashville, in northeastern Alabama.

The National Science Foundation
This project made possible by National Science Foundation Award 1410069