Flora of North America species comparison

15-95 cm, erect or geniculate at the base, sometimes rooting at the lower nodes;

nodes 3-6.

glabrous;

ligules 2-6 mm;

blades 3-29 cm long, 3-8 mm wide, adaxial surfaces slightly scabridulous.

8-35 cm, with 6-13 spikelets;

internodes 1-6 cm;

pedicels 1-5.5(9) mm, ascending to spreading.

15-60 mm, ascending to spreading, with 7-20(30) florets, lower florets bisexual, upper florets pistillate, terminal florets sterile.

15-30 mm.

lanceolate to broadly ovate;

lower glumes 1-4.5 mm;

upper glumes 2-6.5 mm, 1-3-veined;

rachilla internodes 1-2.8 mm long, 0.2-0.5 mm thick, with a glandular swelling at the base;

lemmas 4.5-7.5 mm, 7(9)-veined, veins distinct, often prominent, apices truncate or emarginate, unawned or awned, awns to 11 mm;

paleal keels scabridulous, each with a 0.5-2.5 mm triangular, winglike appendage, often denticulate beyond the appendage;

anthers 2.5-4 mm.

2.5-3.1 mm.

usually awned, awns 5-11 mm, rarely unawned;

paleal appendages 0.5-2.5 mm.

= 16.