Eragrostis lugens
Eragrostis trichophora
mourning lovegrass
hairyflower lovegrass
30-70 cm, erect, sometimes geniculate, glabrous below the nodes.
30-70 cm, erect, geniculate, or prostrate, often rooting at the lower nodes, glabrous, with a ring of glands below the nodes.
usually mostly glabrous, summits hairy, hairs 2-5 mm, never papillose-based;
ligules 0.2-0.3 mm;
blades (4)8-22 cm long, 1-3.5 mm wide, involute to flat, both surfaces glabrous, margins sometimes with scattered hairs, hairs to 7 mm.
glabrous or with scattered papillose-based hairs over most of the surface, apices pilose, hairs 1-4 mm, a ring of oblong glands sometimes present below the collar;
ligules 0.2-0.5 mm;
blades 1.4-10 cm long, 2-3 mm wide, flat to involute, sparsely hairy with papillose-based hairs, abaxial surfaces often with glandular dots.
16-28 cm long, 10-21 cm wide, ovate, open;
primary branches 0.6-15 cm, diverging up to 100° from the rachises, naked basally;
pulvini hairy;
pedicels 1.4-5(7) mm, diverging, wiry, present on all spikelets.
5-20 cm long, 2-7 cm wide, narrowly ovate, open;
primary branches 2-7 cm, diverging 10-70° from the rachises, lowest branches whorled, naked proximally, bases with a glandular band;
pulvini hairy;
pedicels 0.3-3.3 mm, glandular.
2-4.5(5) mm long, 0.5-1(1.3) mm wide, narrowly lanceolate, plumbeous to reddish-purple, with 2-7 florets;
disarticulation acropetal, paleas persistent.
4-5.4 mm long, 1-1.5 mm wide, linear-lanceolate, plumbeous to greenish-gray, with 3-5 florets;
disarticulation acropetal, paleas persistent.
broadly ovate to narrowly lanceolate, hyaline, sometimes reddish-purple;
lower glumes 0.6-1 mm;
upper glumes 1.1-1.4 mm, usually broader than the lower glumes;
lemmas 1.2-1.8 mm, broadly ovate, mostly membranous but the distal margins hyaline, lateral veins inconspicuous, apices acute;
paleas 1.1-1.7 mm, membranous to hyaline, apices obtuse;
anthers 3, 0.2-0.7 mm, reddish-purple.
subequal, 1.4-1.8 mm, ovate-lanceolate, membranous;
lemmas 1.5-1.8 mm, ovate, membranous, often hyaline, lateral veins inconspicuous, apices obtuse to acute;
paleas 1.3-1.7 mm, hyaline, bases not projecting beyond the lemmas, apices obtuse;
anthers 3, 0.7-1 mm, purplish.
0.5-0.6 mm, obovoid to somewhat prism-shaped, terete to somewhat laterally compressed, sometimes with a weak adaxial groove, finely striate, usually opaque, faintly reddish-brown to whitish.
0.6-0.8 mm, ovoid, terete to dorsally compressed, shallowly grooved adaxially, translucent, mostly whitish to light brown, bases often greenish.
= 40, 80, ca. 108.
= unknown.
Eragrostis lugens
Eragrostis trichophora
Eragrostis lugens grows on sandy dunes and along river banks, at 1-300 m. Its range extends from the southern United States to Peru and Argentina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Eragrostis trichophora is native to Africa, where it often grows in moist, disturbed or overgrazed sites. It has been collected from disturbed sites at Canton, Maryland.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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