Difference between revisions of "Thalictrum mirabile"
Bull. Torrey Bot. Club 27: 277. 1900.
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|genus=Thalictrum | |genus=Thalictrum | ||
|section=Thalictrum sect. Physocarpum | |section=Thalictrum sect. Physocarpum | ||
Latest revision as of 21:51, 5 November 2020
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
Distribution
Ala., Ga., Ky., N.C., Tenn.
Discussion
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
None.