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: