Cymbopogon jwarancusa

Plants perennial. Culms to 150 cm, erect or geniculate; nodes often swollen. Basal sheaths glabrous, smooth, whitish-green; ligules 2-6 mm, truncate to acute; blades to 30 cm long, 1.5-4 mm wide, whitish. Inflorescences 15-40 cm, erect; rames 13-22 mm; internodes and pedicels densely pilose on the margins and dorsal surface. Sessile spikelets of heterogamous pairs 4.5-5.5 mm; lower glumes lanceolate, shallowly concave distally, sharply keeled, keels not winged; upper lemmas awned, awns 7-10 mm. Pedicellate spikelets about 6 mm. 2n = 20.

Cymbopogon jwarancusa is native to Asia, where it is grown for perfume and as a medicine for fevers. It is grown as an ornamental in the United States, and may persist for a considerable time after planting in the warmest parts of the Flora region.