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Perennials. Culms tufted, slender, straggling, 30–100 cm tall. Leaf sheaths glabrous or shortly hairy; leaf blades flat, rather thin, 6–16 × 0.2–1 cm, margins scabrous-pubescent, apex acute; ligule 3.8–5 mm. Panicle narrow, 5–20 cm; branches ascending or suberect. Spikelets oblong, 3–7 mm, pale green; glumes unequal, 5-veined, subacute; lower glume ovate, shorterthan upper; upper glume ovate-oblong, about 1/2 spikelet length; lemmas papery, 7-veined, subacute, awnless; sterile lemmas narrowly elliptic-oblong, finely pubescent to almost glabrous; lower sterile lemma smooth or rarely transversely wrinkled near apex; upper sterile lemma transversely wrinkled, 2 frill-like appendages on basal hook, sometimes bearded at base; fertile lemma ovate, smooth, glabrous, obtuse; palea 2-veined. Stamens 6, anthers 0.7–1.2 mm.
Loosely tufted perennial, up to 900 mm high. Leaf blade 30-270 x 3-16 mm, soft; ligule an unfringed membrane. Inflorescence an erect or nodding, narrow panicle, sometimes reduced to a raceme. Spikelet 3.0-5.0 mm long; glumes unequal, 1/2-3/4 as long as spikelet, 5-nerved. Florets 3; lower 2 florets sterile, awnless, lemmas similar in texture, sides not long-hairy, usually deeply transversely ribbed especially on upper 1/2, apex abruptly rounded, tufted hairs present or absent at base, second sterile lemma without an ear-like appendage at base; uppermost floret bisexual, lemma firmer than glumes; anther 0.7-1.6 mm long. Flowering time all year.
Tufted, herbaceous perennial or annual, up to 0.8 m tall. Leaf blades flat, often broad, margins undulate; ligule an unfringed membrane. Inflorescence a lax, open panicle. Spikelets 3-5 mm long, green, glumes shorter than spikelet, sterile lemmas corrugate, glabrous, blunt to slightly mucronate. Mainly Sept.-Jan.
Sprawling or tufted perennial or annual to 80 cm. Leaf blades flat, with wavy margins. Spikelets in an open panicle, green, glumes shorter than spikelet, sterile lemmas corrugate, glabrous, blunt to mucronate, the second slightly constricted basally.
