Flora of North America species comparison

10-70 cm, decumbent, branching and rooting at the lower nodes.

20-100 cm, ascending from a geniculate base.

compressed, glabrous or pubescent;

ligules 1-2.1 mm;

blades 2-14 cm long, 3-14.2 mm wide.

from shorter than to equaling the internodes, compressed;

ligules 0.7-1.7 mm;

blades 4-18(35) cm long, 2-10(14.2) mm wide, adaxial surfaces sparsely pilose, hairs papillose-based.

2-8.2 cm;

fascicles 9-16 mm long, 4-8 mm wide, imbricate, ovoid, densely pubescent;

bristles 15-43;

outer bristles usually present, flattened or terete;

inner bristles 4-8 mm long, 1.2-3 mm wide, fused for at least 1/2 their length, forming a distinct cupule, the distal portions diverging at irregular intervals from the cupule, stramineous or purple.

2.5-12 cm;

rachis internodes 2-4 mm;

fascicles 5-10 mm long, 3.5-6(6.3) mm wide, imbricate;

outer bristles 10-20, terete, the majority no more than 1/2 as long as the inner bristles;

inner bristles 2-5 mm long, 0.6-1.5 mm wide, flattened, not grooved, mostly erect, fused for at least 1/2 their length into a globose cupule, sometimes interlocking at maturity, shortly pubescent, often purple at maturity.

1(2) per fascicle, 6-8.8 mm.

2-3(4) per fascicle, 4.8-7 mm.

1-4 mm;

upper glumes 4.9-6.8 mm, 3-7-veined;

lower lemmas 5.5-7.5 mm, 3-7-veined, enclosing the palea;

upper lemmas 6-8.7 mm;

anthers 0.8-2.8 mm.

1.3-3.4 mm;

upper glumes 3.8-5.7 mm, 3-7-veined;

lower lemmas 4.5-6.5 mm;

upper florets 4.7-7 mm;

anthers 0.8-2.4 mm.

2.6-4 mm long, 2.2-3.1 mm wide, ovoid-elliptic.

ovoid, 1.2-3.2 mm long, 1.3-2.2 mm wide.

= 34.

= (34), 68.