Clematis crispa


Sp. Pl. 1: 543. 1753.

Common names: Marsh clematis curly clematis blue-jasmine
Synonyms: Viorna crispa (Linnaeus) Small Viorna obliqua Small
Treatment appears in FNA Volume 3.

Stems viny, to 3 m, glabrous or sparsely to moderately pilose-pubescent, denser at nodes. Leaf blade 1-2-pinnate or rarely a few simple or 3-foliolate; leaflets 4-10 plus additional ± tendril-like terminal leaflet, usually lanceolate to ovate, occasionally linear, unlobed or proximally 3-5-lobed, (1.5-)3-10 × (0.1-)0.4-4(-5) cm, thin, not conspicuously reticulate; surfaces glabrous, not glaucous. Inflorescences terminal, 1-flowered; bracts absent. Flowers bell-shaped; sepals distally strongly spreading to recurved, violet-blue, lanceolate, 2.5-5 cm, margins proximally thick and tomentose, distally broadly expanded, 2-6 mm wide, thin, crispate, less conspicuously tomentose than proximal portion, or glabrate, tips acuminate, abaxially glabrous. Achenes: bodies appressed-puberulent; beak 2-3.5 cm, appressed-puberulent. 2n = 16.

Phenology: Flowering spring–summer.
Habitat: Low woods, bottomlands, swamps
Elevation: 0-200 m


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Ala., Ark., Fla., Ga., Ill., Ky., La., Miss., Mo., N.C., Okla., S.C., Tenn., Tex., Va.


Clematis crispa is highly variable in leaflet width, and conspicuous variation may occur on a single plant (R.O. Erickson 1943); no discontinuity or geographic correlation exists that would permit the recognition of varieties. The dilated, petaloid sepal tips and thin, crispate, broadly expanded sepal margins are diagnostic for this species.

Selected References


Lower Taxa

... more about "Clematis crispa"
James S. Pringle +
Linnaeus +
Undefined subg. Viorna +
Marsh clematis +, curly clematis +  and blue-jasmine +
Ala. +, Ark. +, Fla. +, Ga. +, Ill. +, Ky. +, La. +, Miss. +, Mo. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +  and Va. +
0-200 m +
Low woods, bottomlands, swamps +
Flowering spring–summer. +
Endemic +  and Illustrated +
Viorna crispa +  and Viorna obliqua +
Clematis crispa +
Clematis subg. Viorna +
species +