Herbs, perennial. Taproot long. Leaves basal, sparsely white villous or glabrate; petiole 0.8-1.5 cm, broadly winged; leaf blade linear-lanceolate to elliptic, 2-5 × 0.2-0.4 cm, thickly papery, veins 3, base attenuate to decurrent onto petiole, margin entire or remotely denticulate, apex acuminate. Spikes shortly cylindric to capitate, 3-12 mm, densely flowered; peduncle 2-6 cm, sparsely appressed villous; bracts ovate to triangular-ovate, as long as or slightly longer than calyx, keel broad. Sepals 1.5-2 mm, sparsely pilose at base, keel narrow and not extending to apex; lower sepals ovate-elliptic; upper sepals broadly ovate. Corolla white, glabrous; lobes narrowly triangular, 1-1.3 mm, patent to reflexed. Stamens adnate to near apex of corolla tube, exserted. Pyxis ovoid, 2-3 mm, with 3 or 4 seeds. Seeds black, oblong to narrowly ovoid, (1-)1.5-2 mm, ventral face flat; cotyledons parallel to ventral side. Fl. May-Jun, fr. Jul-Aug. 2n = 12.
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