Eragrostis lugens
Eragrostis elongata
mourning lovegrass
long lovegrass
30-70 cm, erect, sometimes geniculate, glabrous below the nodes.
28-60 cm, erect to decumbent, glabrous 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, apices sparsely hairy, hairs to 2 mm;
ligules 0.3-0.4 mm;
blades 5-20 cm long, 0.8-3 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, occasionally hairy near the base.
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.
terminal, (5)8-20(22) cm long, 1-3.5 cm wide, spicate to narrowly ovate, branches condensed into glomerate lobes;
primary branches 0.8-3 cm, appressed or diverging up to 90° from the rachises, spikelet-bearing to the base;
pulvini glabrous;
pedicels 0.2-1.3 mm, flattened, mostly appressed, all shorter than the spikelets.
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.
3-7 mm long, 1.8-2.4 mm wide, linear-lanceolate, stramineous with a reddish-purple tinge, with 8-18 florets;
disarticulation acropetal, glumes first, then the lemmas, 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, 1.2-2 mm, narrowly lanceolate to lanceolate, membranous;
lemmas 1.5-2.2 mm, lanceolate to ovate, leathery, greenish, lateral veins conspicuous, apices acute;
paleas 1.1-1.7 mm, hyaline, narrower than the lemmas, keels ciliate, cilia to 0.2 mm, apices obtuse to acute;
anthers 2, 0.2-0.3 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.
0.4-0.5 mm, ovoid, not grooved, smooth, light brown.
= 40, 80, ca. 108.
= unknown.
Eragrostis lugens
Eragrostis elongata
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 elongata is native to southeastern Asia and Australia, where it grows in disturbed, sandy soils at 0-50 m. It was collected once near Washington, D.C., probably as an escape from the U.S. Department of Agriculture's experimental grass garden; it has not become established in the Flora region.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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