大针薹草 da zhen tai cao

Rhizome short. Culms tufted, soft, smooth, leafy at lower 1/3. Cauline leaves shorter than culm; blades 2-3 mm wide, flat, smooth. Inflorescence 1-spiked, terminal, androgynous, elliptic-ovate, 6-12 mm; male part very short, 3-5-flowered; female part longer than male part, 7-15(-23)-flowered. Female glumes pale brown, oblong-lanceolate to elliptic-lanceolate, ca. 3 mm, faintly 3-veined, apex acute to slightly obtuse. Utricles horizontally patent or reflexed at maturity, oblong-lanceolate, trigonous, 3.5-4 mm, membranous, with many distinct slender veins on both sides, base rounded, with very short stipe, apex gradually attenuate into a beak, orifice subtruncate. Nutlet loosely enclosed, oblong, trigonous, ca. 2 mm; style base not thickened; stigmas 3. Fl. and fr. Jun-Jul.

Damp places in broad-leaved and Pinus koraiensis mixed forests. Heilongjiang, Jilin [Japan, Korea, Russia (Far East)].