Flora of North America species comparison

(35)50-100(120) cm, erect or decumbent at the base, scabrous.

closed for less than 73 their length, glabrous or sparsely pubescent, shredding into fibers;

collars glabrous;

ligules 0.2-0.6(1) mm;

blades 3-10 mm wide, flat or loosely convolute, abaxial and adaxial surfaces scabrous or puberulent, veins 13-29, ribs obscure;

sclerenchyma in narrow abaxial and adaxial strands;

pillars or girders formed at the major veins.

10-40 cm, open, with 1-2(5) branches per node;

branches lax, usually spreading, sometimes reflexed.

6-12 mm, with (2)3-5(6) florets.

sparsely scabrous towards the apices, acuminate to subulate;

lower glumes (1.8)2-3(4) mm;

upper glumes (2)3-6 mm;

calluses wider than long, glabrous, smooth or slightly scabrous;

lemmas 5-9 mm, glabrous, sometimes sparsely scabrous, lanceolate, apices entire, acute to acuminate, awned, awns (2.5) 5-15(20) mm, terminal, straight, sometimes curved or kinked;

paleas about as long as or slightly longer than the lemmas, intercostal region puberulent distally;

anthers 1.5-2.5(3) mm;

ovary apices pubescent.

= 28.