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Inflorescences

Dissections:
Calamovilfa gigantea

CALAMOVILFA Hack.
Plants hermaphroditic, rhizomatous, perennial. Culms erect (solitary), glabrous; internodes solid, terete. Leaves cauline; sheaths terete, margins open; auricles absent; ligules a line of hairs; blades flat or folded, not pungent, attenuate, stiff. Panicles open; primary branches spreading or ascending, terminating in a spikelet. Spikelets solitary, laterally compressed, awnless, pedicellate, pedicels without glands; disarticulation above glumes; florets 1, callus hairy; reduced floret absent; glumes 1-veined, unequal, equal to floret length, awnless, glabrous; lemmas 1-veined, chartaceous, entire, awnless, glabrous or hairy, veins glabrous to hairy; paleas 2-veined, awnless, hairy, Stamens 3; anthers yellow, Achene with free pericarp, terete. Base chromosome number x=10

A genus of about 4 species native to North America. Species of open habitats, dry and sandy prairies or dunes, or sandy pine barrens.