Perennials, rarely annual. Leaves aromatic. Inflorescence composed of short, paired racemes arranged in a dense, spherical to elongated, spatheate false panicle. Rhachis internodes and pedicels filiform, long-ciliate on both margins; lowermost sometimes swollen and barrel-shaped. Racemes deflexed at maturity, borne on subequal flattened raceme-bases; with lowermost pair of spikelets a homogamous pair. Sessile spikelet dorsally flattened; callus obtuse; lower glume with a median groove, narrowly winged on the keels, awnless; lower floret reduced to a hyaline lemma; upper floret fertile; lemma deeply 2-lobed or entire, awnless. Pedicellate spikelet male, rounded on back, awnless. Worldwide: 56 species in the warm and tropical regions of the Old World Botswana: 5 taxa. |
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| Species | FZ divisions | Content |
| caesius (Hook. & Arn.) Stapf subsp. caesius | N,SW,SE | Description |
| caesius (Hook. & Arn.) Stapf subsp. giganteus (Chiov.) Sales | N,SW | Description |
| citratus (DC.) Stapf | Description | |
| nardus (L.) Rendle | Description | |
| pospischilii (K. Schum.) C.E. Hubb. | N,SW,SE | Description |