Calopsis

Plants caespitose or tangled. Rhizomes very short. Culms branching, sometimes sparsely. Leaf sheaths persistent, either closely convolute or somewhat spreading. Maleinflorescence similar to female ones, paniculate with (1-)many discrete, compact spikelets; spathes relatively insignificant. Malespikelets: florets many; perianth compressed; perianth segments 6, outer lateral ones usually boat-shaped, villous to glabrous on midrib; anthers exserted at anthesis. Femaleinflorescence similar to male, but spikelets often somewhat larger. Femalespikelets: bracts cartilaginous or osseous, usually somewhat longer than florets, usually uppermost 1-many fertile; perianth segments cartilaginous or bony, outer lateral perianth segments keeled, rarely winged or villous; staminodes well developed; ovary 1-locular, styles usually 3, plumose, exserted from behind bracts at anthesis. Fruit a soft-walled nutlet.