Description from Flora of China
Corispermum stenolepis var. psilocarpum Kitagawa.
Plants 15-40 cm tall. Stem erect, terete, branched mostly from upper-middle part; branches slender, 10-35 cm. Leaves linear, 3.5-4.5 cm × ca. 1 mm, 1-veined, base attenuate, margin entire, apex acuminate, mucronate. Spikelike inflorescence slender, loose; bracts linear-lanceolate to lanceolate, 0.6-3.5 cm × 1-2 mm, narrower than utricle, apex acuminate, mucronate. Perianth segment 1, broadly elliptic, 0.9-1.2 × ca. 0.6 mm. Stamens 1-3; filaments longer than perianth segments. Utricle suborbicular, 4.5-5.5 × 4-5 mm, glabrous, subglabrous, or covered with stellate hairs, base cordate, apex deeply emarginate; wing equaling or slightly wider than body, margin irregularly denticulate; beak 1.5-1.7 mm, apex ca. 1/4 as long as beak, recurved. Fl. and fr. Aug-Sep.
Plants with glabrous utricles were described as Corispermum stenolepis var. psilocarpum and reported from W Jilin. However, the typical variety also seems to have utricles glabrous or nearly so (there is no indication of utricle pubescence in the protologue of the species), and thus these infraspecific entities probably do not merit any formal taxonomic recognition.
Corispermum stenolepis and C. platypterum are related to C. macrocarpum and the North American C. pallidum Mosyakin (C. subsect. Platyptera Mosyakin).
* Riversides, dunes. W Jilin, W Liaoning (Chaoyang), Nei Mongol (Ju Ud Meng).