Flora of North America species comparison

normally horizontal for only a short distance before turning up to form a culm, hollow-centered, air canals present.

normally horizontal for only a short distance before turning up to form a culm, sometimes hollow-centered, air canals sometimes present.

leaves: abaxial ligules fimbriate to lacerate, sometimes ciliate;

blades 7-23 cm long, 1-2 cm wide, coriaceous, persistent, evergreen, bases rounded, abaxial surfaces densely pubescent or glabrous, strongly cross veined, adaxial surfaces pubescent.

leaves: abaxial ligules glabrous or ciliate, fimbriate or lacerate;

blades 5-20 cm long, 0.8-2 cm wide, chartaceous, deciduous, bases rounded, abaxial surfaces pilose or glabrous, weakly cross veined, adaxial surfaces pilose.

3-5 cm, with 6-12 florets, the first occasionally sterile.

3-5.5 cm, usually somewhat reddish purple, with 5-8 florets.

unequal, glabrous or pubescent;

lowest glume obtuse to acuminate or absent;

lemmas 1.2-2 cm, glabrous or nearly so.

oblong, beaked, a rudimentary hooked style branch present below the beak.

leaves persistent to tardily deciduous;

sheaths 11-18 cm;

fimbriae 1.5-8.5 mm;

blades 2.5-4 cm.

leaves persistent to tardily deciduous;

sheaths 5.5-11 cm;

fimbriae 1-4.6 mm;

blades 0.8-1.4 cm.

of 9-12 leaves;

blades 20-30 cm long, 1.8-3.2 cm wide, lanceolate to ovate-lanceolate.

of 6-12 leaves;

blades 9-22.5 cm long, 1.4-2.8 cm wide, linear, linear-lanceolate, or ovate-lanceolate.

branches usually 50+ cm, basally erect and distally arcuate, terete, with 3-4 compressed basal internodes, basal nodes developing secondary branches, lower elongated internodes terete in cross section.

branches usually shorter than 35 cm, erect, terete, with 2-5 compressed basal internodes, basal nodes not developing secondary branches.

= unknown.

= unknown.