17. Clematis versicolor Small ex Rydberg in N. L. Britton, Man. Fl. N. States. 421. 1901.
Viorna versicolor (Small ex Rydberg) Small
Stems viny, to 5 m, glabrous or sparsely pubescent. Leaf blade 1-pinnate; leaflets 8-10 plus additional tendril-like terminal leaflet, elliptic to ovate, usually unlobed, occasionally 2-3-lobed, 2-8 × 1.5-6.5 cm, leathery, abaxially and adaxially prominently reticulate; surfaces abaxially glabrous and glaucous. Inflorescences axillary, 1-7-flowered. Flowers broadly urn-shaped; sepals abaxially pale lavender to reddish purple, grading to pale green toward tip, narrowly ovate, 1.5-3 cm, margins not expanded, thick, not crispate, tomentose, tips acute, slightly spreading, glabrous. Achenes: bodies appressed-pubescent; beak (3-)5-6 cm, plumose. 2 n = 16.
Flowering spring-summer (Jun-Aug). Calcareous outcrops, sandy soils, dry woods and thickets, barrens, and roadsides; 30-100 m; Ala., Ark., Ky., Mo., Okla., Tenn., Tex.