Female-fertile florets 1. Palea back glabrous. Style bases widely separated. Abaxial leaf blade epidermis . Guard-cells overlapping to flush with the interstomatals.
Intercostal silica bodies mostly more or less cross-shaped.
With a few small intercostal prickles. Costal short-cells conspicuously in long rows. Transverse section of leaf blade, physiology . Leaf blade 'nodular' in section to adaxially flat. The lamina symmetrical on either side of the midrib.