Annuals or perennials. Inflorescence composed of single, paired or digitate racemes. Each raceme with 1-6 homogamous pairs of spikelets at the base; these male or neuter; upper spikelets with each pair markedly different; the sessile fertile, the pedicellate male or barren. Rhachis internodes and pedicels slender, solid, without a translucent, hyaline central line. Sessile spikelet: callus obtuse; lower glume sometimes pitted; apex acute to broadly obtuse; upper lemma awned from its entire apex; awn glabrous. Pedicellate spikelet similar to sessile but usually male or neuter and awnless. Worldwide: 20 species in the Old World tropics. Botswana: 3 taxa. |
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| Species | FZ divisions | Content |
| annulatum (Forssk.) Stapf var. papillosum (A. Rich.) de Wet & Harlan | N,SE | Description |
| annulatum (Forssk.) Stapf var. annulatum | Description | |
| sericeum (R. Br.) A. Camus | Description |