Annuals or perennials. Inflorescence a dense, spike-like panicle (in ours), rarely open. Spikelets laterally flattened (dorsally in S.
interrupta), asymmetrical; glumes prominently
ribbed; lower 1/4 to 3/4 the length of the spikelet; upper glume equalling spikelet and gibbous; lower lemma resembling upper glume but less gibbous; upper lemma dorsally flattened, thinly coriaceous to cartilaginous; margin flat or
involute but never hyaline Worldwide: 30 species in tropical and warm areas, especially Africa Botswana: 3 taxa. |
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