Difference between revisions of "Heuchera alba"
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Latest revision as of 23:42, 5 November 2020
Herbs acaulescent; caudex branched. Flowering stems often leafy, 26–77 cm, short stipitate-glandular. Leaves: petiole glabrous or short stipitate-glandular; blade broadly ovate to cordate, shallowly 5-lobed, 4.5–9 cm, base cordate or nearly truncate, lobes rounded to widely ovate, margins dentate, apex acute or obtuse, surfaces glabrous or sparsely stipitate-glandular, at least on veins. Inflorescences diffuse. Flowers: hypanthium moderately bilaterally symmetric, free 3.5–4.5 mm, green, campanulate, abruptly inflated distal to adnation to ovary, 7.5–11 mm, short stipitate-glandular; sepals spreading, green-tipped, equal, 3–4 mm, apex rounded (sinuses narrower than petals); petals inflexed, white, broadly spatulate, unlobed, 2.8–3.5 mm, margins fimbriate; stamens 2 mm included to 2 mm exserted; styles included 0.5–1 mm, 4–6 mm, to 0.1 mm diam. Capsules ovoid, 9–10 mm, beaks divergent, not papillose. Seeds dark brown, ellipsoid, 0.6–1 mm.
Phenology: Flowering May–Jun.
Habitat: Shaded or exposed sandstone rock outcroppings, ridges, and peaks
Elevation: 1300-1500 m
Discussion
Of conservation concern.
Heuchera alba occurs on sandstone ridges in the Ridge and Valley Province.
Selected References
None.