Corispermum macrocarpum Bunge

Several minor forms and varieties were described under this species (e.g., var. elongatum and var. microstachyum). Plants with pubescent utricles were treated as var. rubrum. However, pubescence of utricles and shape of inflorescences are very variable characters in this species. Sometimes initially pubescent utricles become glabrous at maturity.

Plants 20-50 cm. Stem erect, green or slightly reddish purple, much branched; lower branches ascending, upper ones obliquely spreading. Leaves green, linear, 4-7 cm × 1.5-5 mm, 1-veined, base attenuate, apex acuminate, mucronate. Spikelike inflorescence clavate, slightly curved, crowded, usually 7-12 × 1-1.5 cm; bracts lanceolate to ovate, smaller than leaves, subherbaceous, usually 3-veined, base rounded, margin membranous, apex acute or acuminate. Perianth segments 1(or 3). Stamens usually 5, exserted from perianth. Utricle usually dark brown punctate, broadly elliptic or obovate-oblong, 5-6 × 3.5-4.2 mm, glabrous or covered with stellate hairs, base rounded or cordate, apex emarginate; wing lighter colored than body, 1.2-1.5 mm wide, margin entire or slightly irregularly denticulate; beak 1-1.5 mm, apex 1/5-1/4 as long as beak. Fl. and fr. Jul-Sep.

Dunes. Heilongjiang, W Liaoning [Russia (Far East)].

Corispermum macrocarpum var. elongatum P. Y. Fu & W. Wang, p.p.; C. macrocarpum var. microstachyum P. Y. Fu & W. Wang; C. macrocarpum var. rubrum P. Y. Fu & W. Wang.

Corispermum macrocarpum là loài thực vật có hoa thuộc họ Dền. Loài này được Bunge ex Maxim. mô tả khoa học đầu tiên năm 1859.

大果虫实（学名：Corispermum macrocarpum）是苋科虫实属的植物。分布于远东地区以及中国大陆的黑龙江、辽宁等地，生长于海拔700米的地区，多生于沙地及固定沙丘上，目前尚未由人工引种栽培。