Flora of North America species comparison

20-55(70) cm, decumbent, branching and rooting at the lower nodes;

nodes 3-4.

glabrous or sparsely pubescent;

ligules 0.6-2.5 mm;

blades 1.5-9 cm long, 3-5 mm wide, glabrous, with a few papillose-based hairs basally.

terminal and axillary;

terminal panicles with 2-7 spikelike primary branches, subdigitate or on 0.5-2 cm rachises;

primary branches 6-15.5 cm, axes wing-margined, wings at least 1/2 as wide as the midribs, bearing spikelets in groups of 3, lower portions of the longer pedicels adnate to the axes;

secondary branches rarely present;

axillary inflorescences always present in some of the lower sheaths, entirely or partially concealed.

1.7-2.3 mm, homomorphic, narrowly elliptic.

absent or a veinless, membranous rim;

upper glumes 1.3-2.3 mm, from 3/4 as long as to equaling the upper lemmas, appressed-pubescent;

lower lemmas 1.7-2.3 mm, 7-veined, veins unequally spaced, smooth, pubescent;

upper lemmas dark brown at maturity;

anthers 0.4-0.6 mm.

= 36.