Flora of North America species comparison

(20)40-150 cm, decumbent, usually rooting at the lower nodes;

nodes pubescent;

internodes glabrous or with papillose-based hairs, hairs to 4.7 mm.

(50)80-150 cm, branching and sprawling, often becoming matted, usually rooting at the lower nodes;

upper nodes appressed pubescent;

internodes glabrous basally, appressed pubescent distally.

glabrous or with papillose-based hairs, hairs 0.5-4.7 mm;

ligules of hairs, 0.7-2.2 mm;

blades 3.6-27 cm long, 2-9(14) mm wide, flat, glabrous or pubescent, with or without papillose-based hairs.

densely tomentose, hairs 0.5-5.2 mm, spreading, papillose-based, often sticky and smelling of linseed oil;

ligules of hairs, 1-2 mm;

blades 3.5-19 cm long, 4-14 mm wide, flat, pubescent, hairs sometimes papillose-based.

(4)6-22 cm long, (1.5)2.5-12 cm wide;

primary branches to 11 cm, ends of the primary branches, secondary branches, and pedicels capillary;

pedicels 0.6-5.3 mm, usually hairy distally, hairs to 6.3 mm.

(4.5)7-20 cm long, 1-9.5 cm wide, narrowly ovate;

primary branches to 8 cm;

pedicels usually shorter than the spikelets, glabrous, scabridulous.

2-5.7 mm;

calluses hairy, hairs to 4 mm.

1.7-2.4 mm, usually purplish;

calluses glabrous.

1.3-1.9 mm long, 0.6-0.9 mm wide.

0.9-1.2 mm long, 0.3-0.4 mm wide.

glumes 0-1.7 mm, pubescent, sometimes with papillose-based hairs, apices rounded, truncate, or slightly cleft;

upper glumes (1.9)2.3-4.9 mm, enclosing the upper florets, gibbous basally, densely pubescent, hairs to 7 mm, sometimes papillose-based, varying from white to rose or darkish purple, apices tapering, beaked, glabrous, unawned or awned, awns to 4.1 mm;

lower florets staminate or sterile;

lower lemmas 1.9-4.8 mm, unawned or with awns to 4.2 mm;

lower paleas 0.9-4 mm;

anthers (0.8)1.5-2.6 mm, orange-brown to orange;

upper lemmas 1.8-2.7 mm, glabrous;

anthers 3, 1.2-1.7 mm, orange-brown to orange.

glumes absent or to 0.3 mm, glabrous, scabridulous;

upper glumes 1.6-2.4 mm, glabrous, unawned, sometimes muticous;

lower florets sterile;

lower lemmas bilobed, lobes 0.2-0.7 mm, unawned or awned, awns to 18 mm;

lower paleas absent;

upper lemmas 1.4-1.9 mm, glabrous;

upper paleas 1.5-1.9 mm, usually slightly longer than the upper lemmas;

anthers 3, 1-1.5 mm, reddish-brown to orange.

= 36.

= 36.