Compilation
Chrysopogon nigritanus

Caespitose perennial; culms 150–300 cm high, unbranched, the uppermost nodes exposed, glabrous; ligule scarious with shortly ciliate margin or a line of hairs on an extremely short scarious rim; leaf laminas up to 90 cm × 7 mm, narrow. Panicle 15–40 cm long, lanceolate; main axis minutely ciliolate; whorls 8–10 each with up to 15 racemes; racemes very slender; rhachis internodes longer than the spikelets, glabrous; pedicels shorter than the sessile spikelets, glabrous. Sessile spikelet c. 7 mm long, narrowly linear-lanceolate; inferior glume coriaceous, spinulose on the back; superior glume coriaceous to chartaceous, sharply keeled in the middle and with inflexed margins, spinulose along the keel, drawn out into a shortly aristate tip; inferior floret with ovate hyaline lemma; superior floret bisexual, the lemma hyaline with a bilobed apex; awn c. 5 mm long, sometimes slightly exserted from the glumes, glabrous on the column, minutely scabrid on the bristle. Pedicelled spikelet neuter, shorter than the sessile; glumes similar to those of the sessile spikelet but less coriaceous and less spinulose; inferior glume c. 5 mm long, sparingly aculeolate along the keel towards the apex or almost smooth; superior glume smooth with flexible ciliate margins; inferior lemma hyaline with ciliate margins.