武夷山薹草 wu yi shan tai cao

Rhizome rather stout, sometimes elongate. Sub-basal sheaths of flowering culms with blades; blades of vegetative culms herbaceous, linear, shorter than culm, 5-7 mm wide, glabrous, midvein and 2 lateral veins slightly prominent, ligule up to 1 mm. Flowering culms 50-65 cm tall, with spikes at nodes above middle; involucral bract sheaths hardly inflated above, glabrous, blades nearly equaling to slightly longer than sheath. Spikes androgynous, single to ternate at each node, linear-cylindric, 2-5 cm; male part of spike nearly equaling female part, densely flowered; female part loosely 3-7-flowered; peduncles 3-10 cm, slender, exserted, slightly nodding. Female glumes pale brown, oblong-ovate, 3-4 mm, rusty punctate, costa with 3 green veins, apex obtuse. Utricles broadly ovoid, ca. 3 mm, convex adaxially, prominently many veined, base shortly stipitate, apex contracted into a short recurved beak ca. 0.5 mm, orifice emarginate abaxially. Nutlet tightly enveloped, elliptic, trigonous, ca. 2 mm; style base not thickened; stigmas 3. Rachilla small, ca. 1.5 mm. Fl. and fr. Apr.

● Grasslands; ca. 1000 m. Fujian.