Plants ca. 20 cm tall. Stem erect, terete, sparsely stellate hairy, branched from base; lower branches ascending, upper ones obliquely spreading. Leaves linear, 2-3 cm × ca. 3 mm, fleshy, 1-veined, sparsely stellate hairy, base attenuate, apex acute, mucronate. Spikelike inflorescence terete, crowded; bracts lanceolate to narrowly ovate, 0.6-1.5 cm × 2-3 mm, narrower than utricle, usually 1-veined, base attenuate to rounded, margin membranous on upper bracts, apex acute to acuminate. Perianth segment 1, ovate or oblong-ovate, ca. 1.5 mm, apex rounded, irregularly denticulate. Stamens 1(or 3), ca. 1.5 × as long as perianth. Utricle yellow-green, obovate, 4.5-5 × 3.5-4.5 mm, irregularly rugose abaxially, glabrous, base cordate or subcordate, apex shallowly emarginate; wing yellow-green, ca. 1 mm wide, margin irregularly denticulate; beak ca. 1.5 mm, apex 1/5-1/4 as long as beak. Fl. and fr. Jul-Aug.

Corispermum pseudofalcatum is closely related to C. falcatum. Additional studies of the variability patterns of these entities would be desirable to clarify their status.

* High elevations. Xizang (Xigazê).