Corispermum declinatum Steph. ex Stev.

The authorship of Corispermum declinatum has been constantly erroneously cited as “Stephan ex Steven.” However, Steven (Mém. Soc. Imp. Naturalistes Moscou 5: 334. 1817) never accepted C. declinatum as a species, but cited it as a synonym of C. hyssopifolium Linnaeus var. “a.” The first valid publication of the name was by Iljin in 1928.

Plants 15-50 cm tall. Stem erect, much branched; lower branches ascending. Leaves linear, 2-6 cm × 1-3 mm, 1-veined, base attenuate, apex acuminate, mucronate. Spikelike inflorescence elongate, narrowly linear, loose and interrupted, at maturity often reflexed, 5-15 × 0.5 cm; bracts linear-lanceolate to lanceolate, 0.5-3 cm × 2-3 mm, 1-veined, base broadly cuneate, margin membranous, apex acuminate. Perianth segments 1(or 3), upper one broadly elliptic, apex entire or erose. Stamens 1(or 3); filaments ca. 1/2 as long as perianth segments. Utricle obovate-oblong, 3-4 × ca. 2 mm, glabrous, base broadly cuneate, apex triangular to rostrate, acute; body narrowly obovate to elongate, smooth or tuberculate; wing absent or obscure, margin entire; beak ca. 0.5 mm, apex erect, ca. 1/3 as long as beak. Fl. and fr. Jun-Sep.

Sandy wastelands, riversides, field margins, roadsides. Gansu, Hebei, Liaoning, Nei Mongol, Shaanxi, Shanxi, Xinjiang [Mongolia, Russia (S Siberia); NC Asia; locally naturalized in E Europe].

Käänd-lurssvili (Corispermum declinatum) on rebasheinaliste sugukonda kuuluv taimeliik.

Taim on kantud Eesti ohustatud liikide punasesse nimestikku.

Corispermum declinatum là loài thực vật có hoa thuộc họ Dền. Loài này được Steph. ex Iljin mô tả khoa học đầu tiên năm 1928.

绳虫实（学名：Corispermum declinatum）是苋科虫实属的植物。分布于俄罗斯、蒙古以及中国大陆的山西、新疆、陕西、辽宁、河北、内蒙古、甘肃、河南等地，生长于海拔560米至3,200米的地区，常生于沙质荒地、田边、路旁和河滩中，目前尚未由人工引种栽培。