Narenga Bor, Indian Forester. 66: 267. 1940.
Perennials; culms erect, stout solid, hairy below the inflorescence, the
nodes usually hairy. Blades narrowly linear, the upper ones reduced into subulate threads, the midrib thickened, ligule rounded, ciliate. Inflorescence a narrow panicle. Spikelets monomorphic, paired, the one sessile and the other pedicelled, bisexual; rachis easily breaking off when mature, the joint with 2-4-branches, the nodes softly hairy, triangular. Sessile spikelets lanceolate, the callus purplish hairy, the hairs nearly equaling the spikelet; lower glume 2-keeled, obtuse, glabrous on the back; upper glume boat-shaped; lower lemma oblong, ciliolate, equaling the glume; upper lemma narrower and shorter, the palea minute or reduced; stamens 3. Caryopsis with a large embryo.
About two species distributed from Northeastern. India to Borneo, China and Taiwan.
Only one species, N. porphyrocoma is found along rivers in Taiwan. Formally this genus was included in the genus Saccharum.