光滑水筛 guang hua shui shai

Stems elongated, 2-6 cm tall, branched from base. Leaves cauline, lanceolate, 6-9 cm × ca. 2.5 mm, veins 3, apex acuminate. Spathes green, 2.5-3 cm × ca. 2 mm, with peduncle 0.2-2.2 cm. Flowers bisexual. Sepals yellowish green, linear-lanceolate, 4-5 × ca. 0.5 mm. Petals 9-10 × ca. 1 mm. Stamens 3; filaments 3-5 mm; anthers 3.5-5 mm. Ovary conic; styles 5-6 mm. Fruit 2.5-3 cm. Seeds 40-60, ovoid, smooth. Fl. and fr. May-Sep. 2n = 72.

Paddy fields. Anhui, Fujian, Guangdong, Hainan, Jiangxi, Zhejiang [Japan].