Spreading or ascending perennial 2–5 dm, somewhat woody below, often rhizomatous but the stems clustered; lvs linear to linear-oblong, 2–4 cm, without evident lateral veins; cymes compact and few-fld; sep very unequal, the outer pair ovate or broadly lanceolate, 7–12 mm, the others smaller; pet 9–13 mm; stamens 120–200; stigmas 3(4), minute; fr ovoid, 5–8 mm; seeds 1.5–1.8 mm. Limestone outcrops, cedar-glades, etc.; Ky. and s. Ind. to Ga. June–Aug.