Flora of North America species comparison

10-40 cm, suberect, branching, fully or mostly emergent.

10-50 cm, suberect to erect.

mostly basal or scattered along the culms, not conspicuously floating or streaming in the current;

sheaths glabrous or ciliate;

ligules to 5 mm, lanceolate, acuminate;

blades 3-30 cm long, 0.5-4 mm wide, glabrous, sometimes scabridulous.

mostly basal or scattered along the culms, not conspicuously floating or streaming in the current;

sheaths glabrous or ciliate;

ligules to about 6 mm, lanceolate, acuminate;

pseudopetioles sometimes present;

blades 3-30(39) cm long, 1-6 mm wide, glabrous or puberulent.

panicles.

panicles;

pedicels capillary.

1-1.3 mm, broadly ellipsoid to subglobose, smooth, lustrous.

1.5-2.2 mm, ovoid or broadly ellipsoid, lightly to moderately striate, somewhat lustrous.

panicles 1-3 cm, terminal, with 10-25 spikelets;

staminate florets 3.5-8 mm, caducous;

lemmas lanceolate, 5-veined;

paleas similar, 3-veined;

anthers 6, 2-5 mm.

panicles 4-6 cm, terminal, with 9-17 spikelets;

staminate florets 4-8 mm;

lemmas lanceolate, faintly 5-9-veined;

paleas similar, 3-veined;

anthers 6, 2-4 mm, linear.

panicles to 7 cm, arising from the lower to middle nodes of the culms, partially exserted from the sheaths, with 10-25 spikelets;

branches filiform, spreading to reflexed;

pistillate florets 2-2.5 mm, caducous;

lemmas 7-14-veined, erose to acuminate or caudate;

paleas similar to the lemmas, 5-10-veined;

stigmas 2-3 mm.

panicles to about 12 cm, arising from the lower nodes of the culms, all or mostly exserted, with 9-17 spikelets;

branches slender, divergent to reflexed;

pistillate florets 3-5 mm, caducous;

lemmas 8-13-veined, acuminate or caudate;

paleas similar, 6-8-veined;

stigmas 2-4 mm.

= 24.

= 24.