Corispermum falcatum Iljin

Plants 5-12 cm. Stem few branched, mostly in lower part; branches obliquely spreading or prostrate, longer than main stem, terete. Leaves green, linear, 1.5-2.5 cm × 1.5-2.5 mm, slightly fleshy, 1-veined, base attenuate, margin entire, apex acute, mucronate. Spikelike inflorescence terete, crowded; bracts lanceolate, usually sickle-shaped, 1-2 cm × 2.5-3 mm, slightly narrower than or equaling utricle, 1-veined, base attenuate or rounded, margin entire, narrowly membranous, apex acute, mucronate. Perianth segments 1(or 3), upper one ovate or oblong-ovate, apex lacerate, denticulate, lower segments very small or absent. Stamens 1-3, 1.5-2 × as long as perianth segments. Utricle dark green, obovate-elliptic, 3.5-4 × 2.5-3 mm, glabrous, base rounded, apex widely emarginate; wing light yellow, ca. 0.5 mm wide, margin irregularly denticulate; beak ca. 1 mm, apices 2, crossed, ca. 1/2 as long as beak. Fl. and fr. Jul-Sep.

* Sandy places in valleys. Qinghai (Qaidam Pendi), Xizang (Gyangzê, Xigazê).

Annual up to 40 cm, slightly pubescent. Leaves lanceolate, oblanceolate or narrowly oblong, often recurved, up to 3.0 × 0.5 cm. Inflorescence elongated, with many flowers. Bracts usually recurved, sickle-shaped, not completely covering the fruit. Fruits 3.5–4.0 × 3.0 mm, glabrous but sometimes with dark-brown cells and scattered warts (Fig. 33A); fruit margin emarginate at the top. Wing 0.45–0.60 mm, denticulate or crisp, narrowly triangular in cross-section. Sclereids in the medium fruit part consist of 1–2 cell layers orientated parallel to the fruit axis.

See Fig. 34.

Corispermum falcatum là loài thực vật có hoa thuộc họ Dền. Loài này được Iljin mô tả khoa học đầu tiên năm 1929.

镰叶虫实（学名：Corispermum falcatum）是苋科虫实属的植物，为中国的特有植物。分布于中国大陆的西藏、青海等地，多生长于河谷沙滩上，目前尚未由人工引种栽培。