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FOC | Family List | FOC Vol. 22 | Poaceae

92. Beckmannia Host, Icon. Descr. Gram. Austriac. 3: 5. 1805.

菵草属 wang cao shu

Authors: Sheng-lian Lu & Sylvia M. Phillips

Annual or perennial. Leaf blades linear, flat; ligule membranous. Inflorescence composed of many unilateral racemes along a central axis; racemes dense, the lower often branched; spikelets subsessile, closely imbricate, biseriate. Spikelets orbicular, disarticulating below glumes, bisexual floret 1, with or without a second staminate floret above it; rachilla extension absent; glumes equal, gibbously inflated, enclosing all but apex of floret, not or weakly keeled, herbaceous with thinner white margins, 3-veined, apex obtuse or acute; floret callus short, glabrous; lemma lanceolate, cartilaginous, rounded on back, 5-veined, apex acute or tapering to a cusplike awn-point; palea somewhat shorter than lemma. Caryopsis terete.

Two species: temperate regions of the N hemisphere; one species in China.

The second species in the genus, Beckmannia eruciformis (Linnaeus) Host, occurs from Europe and the Mediterranean region to C Asia and E Russia. It is a perennial with short, creeping rhizomes, sometimes with tuberous basal internodes, spikelets usually with 2 florets, globose, inflated glumes, and longer anthers 1.2–1.8 mm.

Lower Taxa


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