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FNA | Family List | FNA Vol. 8 | Saxifragaceae | Micranthes

18. Micranthes careyana (A. Gray) Small, Fl. S.E. U.S. 501. 1903.

Carey’s saxifrage Carey’s saxifrage

Saxifraga careyana A. Gray, Amer. J. Sci. Arts 42: 32. 1842; S. tennesseensis Small

Plants often mat-forming, with extensive rhizomes. Leaves basal; petiole flattened, 1-7 cm; blade rounded or broadly ovate to oblong, 1-7 cm, thin, base truncate, margins coarsely serrate to dentate, sparsely ciliate, surfaces sparsely to ± densely tangled, reddish brown-hairy. Inflorescences 40+-flowered, lax, open thyrses, 10-40(-50) cm, purple-tipped stipitate-glandular. Flowers: sepals spreading, broadly ovate; petals white, sometimes some with 2 faint, basal yellow spots (sometimes fading upon drying), narrowly ovate to elliptic, clawed, 2-4(-5) mm, 2+ times as long as sepals; filaments linear, flattened; pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). Capsules green, ± purple tinged, folliclelike.

Flowering spring-early summer. Moist soil at bases of vertical or overhanging rock outcrops, seeps; 500-1600 m; Ala., Ga., Ky., N.C., Tenn., Va., W.Va.

Micranthes careyana is very similar to M. caroliniana; both are in need of study.


 

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