Description

Key Characters:

Growth Form: Perennial herb.

Stems: Rhizome with long stolons. Culms 40-100 cm tall, trigonous, smooth, slightly scabrous above, clothed at base with light brown sheaths slightly disintegrating into parallel or reticulate fibers.

Roots:

Leaves: Leaves simple. Alternate. Leaves shorter or slightly longer than culm, subflat, blades linear, ca. 3 mm wide. Margins slightly scabrous. Stipules absent.

Flowers: Involucral bracts leaflike, longer than or equaling inflorescence, sheathless. Spikes 3-5, distant; upper 1 or 2 spikes male, linear, ca. 3.5 cm; remaining spikes female, cylindric, 25-40 × 3-4 mm, densely many flowered, lower ones shortly pedunculate. Female glumes ferruginous or light brown, oblong, 2.5-2.8 mm, green 3-veined at middle, margins white hyaline, apex obtuse. Flowers unisexual, 1 male flower or 1 female flower in a unisexual spikelet. Plants monoecious. Ovary superior; stigmas 2.

Fruit: Utricles green-yellow; longer than glume; elliptic or long elliptic; plano-convex; membranous; densely minutely papillose; 4- or 5-veined; base shortly stipitate; apex abruptly contracted into a very short beak; orifice emarginate or entire. Nutlets loosely enveloped; obovate; plano-convex; apex rounded; style base not thickened.

Ploidy:

Habitat:

Elevation Range: