Eragrostis curvula is a perennial C4 grass (Downton 1971), 60-180 cm tall, tufted, stems very tough, keeled, hairy at base; sheath often pale tan at base, sometimes purplish higher up, with long hairs at top, ligules a dense band of short hairs.
Leaves long, fine, about 60 cm, inrolled when dry.
Flower spikelets dark gray-green 0.5-0.9 cm long, flattened, ranked, pinnate appearance, somewhat appressed to branches, eventually becoming pale gray with tan veins, fragmenting between florets, 5-9 florets, about 0.3 cm long, first glume about 0.2 cm, second 0.2-0.3 cm, lemma 0.20.-3 cm, often deciduous; inflorescence 20-35 cm long, open, axils of main branches hairy.
Wetland status: UPL.
Frequency in NYC: Infrequent.
Habitat: Open areas, dry sandy soil pH 4.5-8.5, tolerant of drought, moderately tolerant of fire, intolerant of salt, shade (USDA, NRCS 2010).
Notes: Escaped ornamental. Becoming invasive and displacing native plants where present.