Arkansas alum-root

Heuchera arkansana Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 101. 1905

Inflorescences dense, 10-35 (-62) × 1-3(-4) cm, internodes in floral branchlets 0.3-1 mm. Pedicels 0.2-0.9 mm. Flowers: hypanthium subglobose, gla-brous or sparsely long stipitate-glandular; petals reflexed or tightly coiled, narrowly oblanceolate, 0.2-0.4 mm wide. 2n = 14.

Flowering Jun-Sep. Shaded rocks and ledges, granite, gneiss, or acidic humus over limestone or shallow rocky soil; 300-900 m; Ark.

Variety arkansana is found in the Ozark Mountains.