Flora of North America species comparison

30-130 cm.

to 6 m tall, 2-3 cm thick at the base.

glabrous;

ligules ciliate;

blades 4-10 mm wide, loosely twisted, adaxial surfaces with papillose-based hairs basally.

glabrous, smooth or scabrous, margins villous distally;

ligules 1-2 mm, ciliate;

blades to 60 cm long, to 3.5 cm wide, flat.

3-15 cm, uniformly thick, erect, densely spicate;

rachises hispid;

bristles 4-12, 3-8 mm, antrorsely scabrous.

to 50 cm long, to 5 cm wide, densely spikelike;

rachises densely villous;

bristles 1 or 2, 10-20 mm, flexible, antrorsely scabrous.

2-3.4 mm, strongly turgid.

about 2 mm, disarticulating between the lower and upper florets.

about 1/3 as long as the spikelets, 3-veined, acute;

upper glumes about 1/2 as long as the spikelets, 5-veined, ovate;

upper florets often staminate;

lower lemmas equaling the upper lemmas;

lower paleas equaling the lower lemmas, broad;

upper lemmas conspicuously exposed, strongly transversely rugose.

1/3 as long as the spikelets, 3-veined;

upper glumes equaling the lower lemmas, 7-veined;

lower florets often staminate;

lower lemmas slightly exceeding the upper lemmas;

lower paleas equaling the lower lemmas, broad, hyaline, minutely pubescent over the veins;

upper lemmas smooth and shiny brown;

upper paleas similar to the upper lemmas.

= 36, 72.

= 36.