Eustachys retusa
Culms 30-80 cm, erect, or decumbent and rooting at the nodes. Blades 6-12 cm long, 5-10 mm wide, usually folded, apices obtuse. Panicles with (6)8-15 branches; branches 4-10 cm, straight, somewhat stiff. Spikelets 1.5-2.1 mm; florets 2. Lower glumes 1.1-1.3 mm, linear-lanceolate, acute; upper glumes 1.3-1.5 mm, oblanceolate, apices truncate or bilobed, mucronate, mucros to 0.4 mm; calluses with a few short hairs; lowest lemmas 1.7-2 mm, lanceolate to ovate, not strongly keeled, midveins glabrous, lateral veins with widely spreading, white, 1-2 mm hairs, apices acute to mucronate; second lemmas 1.1-1.2 mm, broadly cuneate, apices truncate. Caryopses about 1 mm. 2n = 40.
Distribution
Tex., N.Y., Ga., S.C., N.J., Fla.
Discussion
Eustachys retusa is native to South America, but it is now established along roadsides, sandy fields, and waste areas in the southeastern United States.
Selected References
None.