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Roots sometimes with fusiform, fleshy, tuberous part near tip. Stolons creeping, slender. Leaves narrowly linear, ca. 60 cm × 2--3(--4) mm, 5-veined, base surrounded by many sheaths and fibers, margin serrulate apically. Scape 20--50 cm. Inflorescence 6--15 cm, many flowered; bracts ovate, scarious, basal one 5--6 mm. Flowers in clusters of 2--4, sometimes solitary; pedicel ca. 4 mm, articulate near apex. Tepals white or purplish, suboblong, 3.5--4 × 1.5--1.8 mm. Filaments 1--1.5 mm, flat; anthers ca. 1 mm. Style ca. 2 mm; stigma as wide as style. Seeds blue-black at maturity, ovoid or subglobose, 4--5 mm in diam. Fl. Jun--Aug, fr. Sep--Nov. 2 n = 36*, 72*, 108*.
A herb. It grows 15-40 cm high. The roots can have fleshy tubers near the tip. It has creeping stolons or runners. These are slender. The leaves are narrow. They are 60 cm long by 2-3 mm wide. They are grass-like. They have 5 veins. The base is surrounded by many sheaths. The flowering stalk is 6-15 cm long. There are many flowers. Flowers are white or purplish. The seeds are blue. They are oval and 4-5 mm across.
