Eragrostis intermedia
Eragrostis curvula
plains lovegrass
weeping love grass
(30)40-90(110) cm, erect, glabrous below the nodes.
(45)60-150 cm, erect, glabrous or glandular.
sparsely pilose on the margins, apices hairy, hairs to 8 mm, not papillose-based;
ligules 0.2-0.4 mm;
blades (4)10-20(30) cm long, 1-3 mm wide, flat or involute, abaxial surfaces glabrous, adaxial surfaces densely hairy behind the ligules, elsewhere usually glabrous, occasionally sparsely hairy.
with scattered hairs, hairs to 9 mm;
ligules 0.6-1.3 mm;
blades 12-50(65) cm long, 1-3 mm wide, flat to involute, abaxial surfaces glabrous, sometimes scabridulous, adaxial surfaces with scattered hairs basally, hairs to 7 mm.
15-40 cm long, (8.5)15-30 cm wide, ovate, open;
primary branches 4-25 cm, diverging 20-90° from the rachises, capillary;
pulvini hairy or glabrous;
pedicels 2-14 mm, divergent.
16-35(40) cm long, (4)8-24 cm wide, ovate to oblong, open;
primary branches 3-14 cm, diverging 10-80° from the rachises;
pulvini glabrous or not;
pedicels 0.5-5 mm, appressed, flexible.
3-7 mm long, 1-1.8 mm wide, narrowly lanceolate, olivaceous to purplish, with (3)5-11 florets;
disarticulation acropetal, paleas persistent.
4-8.2(10) mm long, 1.2-2 mm wide, linear-lanceolate, plumbeous to yellowish, with 3-10 florets;
disarticulation irregular to acropetal, proximal rachilla segments persistent.
lanceolate to ovate, hyaline to membranous;
lower glumes 1.1-1.7 mm, narrower than the upper glumes;
upper glumes 1.3-2 mm, apices acuminate to acute;
lemmas 1.6-2.2 mm, ovate, membranous, hyaline near the margins, lateral veins inconspicuous, apices acute;
paleas 1.4-2.1 mm, hyaline, narrower than the lemmas, apices obtuse to acute;
anthers 3, 0.5-0.8 mm, purplish.
lanceolate, hyaline;
lower glumes 1.2-2.6 mm;
upper glumes 2-3 mm;
lemmas 1.8-3 mm, ovate, membranous, lateral veins conspicuous, apices acute;
paleas 1.8-3 mm, hyaline to membranous, apices obtuse;
anthers 3, 0.6-1.2 mm, reddish-brown.
0.5-0.9 mm, rectangular-prismatic, somewhat laterally compressed, with a well-developed adaxial groove, striate, opaque, reddish-brown.
1-1.7 mm, ellipsoid to obovoid, dorsally compressed, adaxial surfaces with a shallow, broad groove or ungrooved, smooth, mostly translucent, light brown, bases often greenish.
= ca. 54, 60, 72, ca. 74, 80, 100, 120.
= 40, 50.
Eragrostis intermedia
Eragrostis curvula
Eragrostis intermedia grows in clay, sandy, and rocky soils, often in disturbed sites, at 0-1850 m. Its range extends from the United States through Mexico and Central America to South America. Eragrostis intermedia is similar to the more widespread E. lugens, but differs from that species in having wider spikelets, longer lemmas, and caryopses with a prominent adaxial groove.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Eragrostis curvula is native to southern Africa. It is often used for reclamation because it provides good ground cover but, once introduced, it easily escapes. In the Flora region, it grows on rocky slopes, at the margins of woods, along roadsides, and in waste ground, at 20-2400 m, usually in pine-oak woodlands, and yellow pine and mixed hardwood forests.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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