Heuchera longiflora Rydberg. Section: Heuchera. Subsection: Heuchera. Long-flowered Alumroot. Phen: May-Jun. Hab: Rich shaded forests and woodlands over calcareous rocks such as limestone, dolostone, or calcite-cemented shales, siltstones, or sandstones, in circumneutral soils. Dist: This species is nearly limited to sedimentary rocks, occurring in e. and c. KY, s. OH, sw. WV, sw. VA, ne. TN, and c. AL.

Origin/Endemic status: Endemic

Taxonomy Comments: Wells (1984) called H. longiflora × aceroides "most distinctive", "characterized by a unique combination of floral characters: long, tubular calyx, deeply included styles, inflexed calyx lobes and petals that close the mouth of the flower obliquely, and horizontal orientation of the flowers".

Synonymy: = Heuchera longiflora Rydb. var. longiflora – Folk et al (2018); = Heuchera longiflora Rydb. var. typica – Rosendahl, Butters, & Lakela (1936); < Heuchera longiflora Rydb. – C, F, FNA8, G, K1, K3, K4, Tn, W, WV, Wells (1984); > Heuchera longiflora Rydb. – S, S13; ? Heuchera pubescens Pursh – RAB, misapplied; > Heuchera scabra Rydb. – S, S13

Show in key(s)

Show parent genus

Heliophily: 2