Heuchera is a genus named for Johann Heinrich von Heucher (1677 - 1747, German Professor of Medicine). It comprises about 55 species of evergreen and semi-evergreen perennials from woodland and rocky sites in North America. Plants characteristically have tufts of long-stalked, rounded, cordate leaves originating from somewhat woody root stock, and slender, mainly leafless stems that bear narrow, loose to dense clusters of small, bell-shaped, 5-petalled flowers with saucer- to urn-shaped calyx tubes well above the leaves. Flowers are sometimes petalless and have conspicuous, colorful calyces. Leaves can be boldly veined, they are usually coarsely toothed or shallowly lobed into 5-7 sections. The fruits are capsules, 6-10 mm long, with tiny, dark brown, spiny seeds.
Guide to Identify Presented Species of Genus Heuchera
FLOWERS WHITISH
H. cylindrica – Round-leaved Alumroot Glandular herb, 15-50 cm tall. Shaded, rocky sites, higher elevations.
Flowers creamy-white, bell-shaped. Calyx 6-8 mm long, longer than petals.
Leaves basal, heart- to egg-shaped, 5-7-lobed, 2-5 cm long, long-stalked.
