Shrub to 1.5 m, spreading with stolons and horizontal roots, stems slightly tapering, hairless, rounded. Leaves 5–12 cm long × up to 6.5 cm wide, oblong-lanceolate to ovate-lanceolate, apex acute-acuminate, margins ciliate, blade otherwise glabrous, base tapered or shallowly cordate, petiole > 5 mm. Cymes few-flowered, terminal ones 3– or 5-flowered, axilliary ones often 1-flowered, flowers pale yellow, darkening with age, 1.2–2 cm long. Calyx lobes glabrous, needle-like, 3–4 mm. Fruit capsule long-pointed, vase-shaped (Bean 1981; Cullen et al. (eds) 2011).
Distribution Canada Eastern Provinces United States From Virginia and West Virginia south to North Carolina and Tennessee, westward to Indiana and Kentucky.
Habitat In open woodlands and rocky habitats, often at higher elevations in the southern part of its range.
USDA Hardiness Zone 5a
RHS Hardiness Rating H7
For a general discussion see the genus article.
The new growth on this clone is coloured copper to bronze, becoming green as the growth matures through the season. Autumn colours in the yellow-orange range (Hatch 2017).