Flora of North America species comparison

50-300 cm, erect, branching;

nodes glabrous.

100-300 cm, erect, branching;

nodes glabrous.

glabrous or pubescent, with or without ciliate margins;

ligules 2-5 mm;

blades 15-100 cm long, 7-70 mm wide, flat, glabrous or pubescent.

burgundy;

sheaths glabrous;

ligules 0.1-0.3 mm;

blades 30-53.5 cm long, (15) 18-35 mm wide, flat, glabrous.

terminal, 4-200 cm long, 2-70 mm wide, fully exerted from the sheaths, erect;

rachises terete, densely pubescent.

terminal, (15.5)18-40 cm long, 32-50 mm wide, fully exerted from the sheaths, flexible, drooping, burgundy;

rachises terete, shortly pubescent.

3-7 mm;

pedicels 0.6-1.8 mm;

lower glumes absent or to 1.5 mm, veinless;

upper glumes 0.5-3.5 mm, 3-5-veined;

lower florets staminate or sterile;

lower lemmas 1.5-6 mm, glabrous, 3-7-veined, margins ciliate;

lower paleas vestigial or fully developed, margins ciliate;

anthers 2.2-2.5 mm, penicillate;

upper florets coriaceous, shiny;

upper lemmas 4.3-7 mm, 5-7(9)-veined, margins ciliate;

upper paleas 3.4-3.9 mm, pubescent, at least near the base, margins ciliate;

anthers 2-2.2 mm, penicillate.

4.4-4.9 mm, sessile or pedicellate, glabrous;

pedicels to 0.1 mm;

lower glumes 1.1 - 1.3 mm, veinless;

upper glumes 2.1 - 2.8 mm, usually about 1/2 as long as the spikelets, 1-3-veined;

lower florets staminate (sterile);

lower lemmas 4-4.5 mm, 5-veined;

lower paleas absent or to 2.6 mm;

anthers absent or 1.4-1.6 mm;

upper lemmas 4.3-4.8 mm, 5-veined;

anthers 1.6-1.8 mm.

2-5.5 mm long, 1.6-3.2 mm wide, protruding from the lemma and palea at maturity.

33-160 per cm;

fascicle axes 1-28 mm, persistent, with 1-9 spikelets;

outer bristles 44-131, 0.5-6 mm;

inner bristles 6-19, 4-6 mm, plumose;

primary bristles 5.5-6.3, ciliate, sometimes noticeably longer than the other bristles.

17-22 per cm;

fascicle axes 0.5-0.7 mm, with 1 spikelet;

outer bristles 21-40, 1.2-22.3 mm, scabrous;

inner bristles absent;

primary bristles 20-23 mm, not noticeably longer than the other bristles, scabrous.

= 14.

= 68.