Thalictrum mirabile


Bull. Torrey Bot. Club 27: 277. 1900.

Conservation concernEndemicIllustrated
Treatment appears in FNA Volume 3.
Revision as of 22:51, 5 November 2020 by imported>Volume Importer
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Stems weakly erect to reclining, 10-30 cm, glabrous. Leaves basal and cauline; basal petioles 2 cm, distal petioles shorter. Leaf blade: basal usually ternately compound, distal gradually less divided; leaflets nearly orbiculate to orbiculate-reniform, apically 4-7-lobed, 20-30 mm wide, lobe margins crenate, surfaces abaxially glaucescent. Inflorescences panicles, few flowered. Flowers: sepals white, spatulate to rhombic-spatulate, 1.5 mm; filaments white, 2-3 mm; anthers 0.3-0.5 mm. Achenes 3-8, spreading; stipe 2.5-3.5 mm, nearly as long as achene body; body flat, 2.5-4 mm, abaxial margin convex, adaxial margin straight, conspicuously 3-veined on each face; beak minute.

Phenology: Flowering late spring–early summer (Jun).
Habitat: Moist sandstone bluffs, sinks, and rocky crevices
Elevation: 200-1500 m


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Ala., Ga., Ky., N.C., Tenn.


Of conservation concern.

Thalictrum mirabile is very similar to T. clavatum. Field studies are in progress to clarify the status of this species.

Selected References


Lower Taxa

... more about "Thalictrum mirabile"
Marilyn M. Park +  and Dennis Festerling Jr. +
Undefined sect. Physocarpum +
Ala. +, Ga. +, Ky. +, N.C. +  and Tenn. +
200-1500 m +
Moist sandstone bluffs, sinks, and rocky crevices +
Flowering late spring–early summer (Jun). +
Bull. Torrey Bot. Club +
Conservation concern +, Endemic +  and Illustrated +
Undefined sect. Sumnera +
Thalictrum mirabile +
Thalictrum sect. Physocarpum +
species +