Leaf-blade usually 1-pinnate, distalmost leaf occasionally simple; leaflets usually unlobed, occasionally some 1-2-lobed, mostly 4-11 × 1.5-6 cm (occasionally smaller in w part of range), thin. Flowers: sepals mostly 1-3 (-3.5) cm; stamens with filaments and extended connectives pubescent, occasionally glabrous. 2n = 16.

Phenology: Flowering spring–fall (Mar–Oct).
Habitat: Limestone outcrops in dry to moist woods and thickets, disturbed sites
Elevation: 0-2200 m

Distribution

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Ark., Ill., Ind., Iowa, Kans., Ky., Mo., Nebr., N.Mex., Okla., Tenn., Tex., Mexico

Discussion

Selected References

None.

Lower Taxa

None.