Flora of North America species comparison

15-50 cm, slender, wiry;

internodes olive green to purplish, densely puberulent or glabrous;

fall phase spreading or decumbent, branching extensively from the lower and midculm nodes, producing numerous congested fascicles of reduced, flat or involute blades and reduced secondary panicles.

15-50 cm, few together, decumbent or ascending, light green, glabrous, slightly fleshy or thickened;

fall phase branching mostly near the bases, with sparse branching;

nodes appressed-pubescent or glabrous.

4-7;

sheaths much shorter than the internodes, densely crisp-puberulent, velvety-puberulent, or glabrous, often ciliate along the margins;

ligules shorter than 0.5 mm;

blades 2-7 cm long (seldom longer), 2.5-8 mm wide (rarely wider), spreading, firm, flat or slightly involute, without prominently raised veins, not longitudinally wrinkled, densely puberulent or glabrous abaxially, glabrous, sparsely puberulent, or pubescent adaxially, bases subcordate, with papillose-based cilia, margins often whitish and scabridulous.

3-4(6);

sheaths sometimes overlapping near the bases, glabrous, margins ciliate;

ligules almost obsolete, or of 0.2-0.8 mm hairs from a tiny membranous base;

blades 1.5-10 cm long, 5-14 mm wide, thick, light green, faintly veined, bases cordate, with papillose-based cilia, margins white, cartilaginous.

1.5-2.6 mm, obovoid-pyriform, planoconvex in side view, puberulent, pubescent, or glabrous, attenuate basally, apices usually broadly rounded.

1.4-1.8 mm, broadly obovoid-spherical, usually puberulent, sometimes glabrous.

0.6-1.4 mm, thin, weakly-veined, attached about 0.2 mm below the upper glumes, clasping at the base;

upper glumes as long as or slightly shorter than the lower lemmas;

upper florets 1.4-2 mm, broadly ellipsoid, apices subacute, minutely puberulent.

0.4-0.8 mm, acute to obtuse, upper florets 1.1-1.5 mm, broadly ellipsoid, blunt.

rosettes well-differentiated;

blades 1.5-6 cm, ovate to lanceolate.

rosettes well-differentiated;

blades 2-6 cm long, about 1 cm wide, ovate, the uppermost leaves often resembling the lower cauline blades.

panicles 2-7 cm long, 2/3 to nearly as wide as long, with relatively few spikelets, exserted;

branches flexuous, spreading or reflexed, scabridulous to densely puberulent.

panicles 4-14 cm, more than 1/2 as wide as long, usually long-exserted.

= 18.

= 18.