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Inflorescences

Dissections:
Gastridium phleoides

Line drawings

GASTRIDIUM P. Beauv.
Plants hermaphroditic, caespitose, annual. Culms ascending (weak), nodes glabrous; internodes hollow, terete. Leaves cauline, not distinctly distichous; sheaths terete margins open; auricles absent; ligules membranous; blades flat, linear, lax. Panicles contracted, primary branches ascending or appressed. Spikelets solitary, laterally compressed, disarticulation above glumes, awned, pedicellate; florets 1, reduced floret absent, callus pubescent, rachilla extended above upper floret as a bristle; glumes 2, 1-veined (margins hyaline), unequal, longer than first floret (long, and narrow); glabrous, awnless; lemmas. 5-veined (these inconspicuous) membranous to chartaceous, pubescent, apex bidentate, awned; awn dorsal, straight or geniculate; paleas 2-veined, awnless, pubescent. Stamens 3; anthers yellowish. Caryopses partially adnate to lemma and palea, dorsiventrally compressed. Base chromosome number x=7.

A small genus of 2-3 species from western Europe, the Canaries, and the Mediterranean. The species are adapted to open habitats in grassland or agricultural lands.