Flora of North America species comparison

9-70 cm, clustered or solitary.

(5)15-75 (90) cm.

smooth, glabrous;

ligules 2.5-5(10) mm, obtuse, entire;

blades 3-13.5(23) cm long, 2.5-14 mm wide, scabrous.

smooth, glabrous;

ligules 0.5-2.5 mm, truncate, erose or ciliolate;

blades 3-15(19) cm long, 0.5-2(4.3) mm wide, glabrous or pubescent.

1-4(8) cm long, 0.7-2 cm wide, ovoid to almost globose, unilateral.

(1) 3.5-14 cm long, 0.4-1 cm wide, linear, spikelike, unilateral.

7-14 mm, subsessile or shortly pedicellate;

pedicels to 1.6 mm.

3-7 mm, subsessile or shortly pedicellate, pedicels to 1 mm.

spikelets with 6-18 florets;

glumes and lemmas similar, subulate to linear-lanceolate, glabrous, sometimes scabridulous, awned, awns to 8 mm.

spikelets strongly laterally compressed, with 6-11(18) florets;

glumes and lemmas similar, linear-lanceolate, keeled, keels ciliate, apices acuminate to awned, awns to 1 mm.

spikelets with 1-5 florets, glumes and lemmas dissimilar;

glumes 5.5-12 mm long, 0.4-0.9 mm wide, narrowly lanceolate, laterally compressed, hyaline, glabrous, 1-veined, keeled, awned, awns 0.5-2.2 mm;

rachilla internodes 0.9-1.3 mm;

lemmas 4-7 mm, slightly dorsally compressed, chartaceous or coriaceous, not keeled, lower 1/2 smooth, glabrous, distal 1/2 villous or scabrous, apices hyaline, ciliolate, entire or bidentate, awned, awns 5-18(25) mm;

anthers 1-4 mm.

spikelets with 2-5 florets, glumes and lemmas dissimilar;

glumes 2.8-5.1 mm long, 0.6-0.9 mm wide, 1-veined, laterally compressed, hyaline, keeled, acute;

rachilla internodes 0.4-0.6 mm;

lemmas 3-4.5 mm long, 0.6-1.1 mm wide, dorsally compressed, membranous to subcoriaceous, not keeled, margins hyaline, ciliolate, apices obtuse to acute, unawned or awned, awns to 3 mm;

anthers 1.8-3 mm.

= 14.

= 14.