Plants from loose caudices. Culms stiffly erect, glabrous. Basal blades large, usually 8-14 cm long, 7-22 mm wide. Cauline blades 5-14 mm wide, about 10 times longer than wide, linear, thin, firm, spreading. Spikelets 3-3.2 mm; lower glumes 1.6-1.8 mm, about 1/2 as long as the spikelets.
Dichanthelium commutatum subsp. equilaterale grows in sandy pine and oak woodlands. Its range extends to southeastern Mexico and Nicaragua.