Base stoloniferous and semi-woody, sending up erect, bristly-hairy stems 20-60cm high. Leaves lanceolate to elliptic, hirsute to slightly so. Flowers pale rose to white, 2.5-4.5cm in diameter, a few at the stem tips, late summer to autumn. Massachusetts to Kentucky and Florida, in damp sandy peaty soils. R.m. var. purpurea has crimson flowers.