Annual herb, up to 0.6 m high. Plant caespitose, without a rhizome. Achene alveolate-lacunose proximally, smooth distally. Glumes castaneous or dark brown.
Lateral panicles solitary, erect, scarcely exserted
Tufted annual 60–100 cm. high, rarely more;
Leaves 2–8 mm. wide