Eragrostis lugens
Eragrostis reptans
mourning lovegrass
creeping lovegrass
30-70 cm, erect, sometimes geniculate, glabrous below the nodes.
rooting at the lower nodes, erect portion 5-20 cm, glabrous, pilose, or villous, particularly below the panicles.
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.
mostly scabrous, margins sometimes with 0.1-0.4 mm hairs;
ligules 0.1-0.6 mm;
blades 1-4 cm long, 1-4.5 mm wide, flat or conduplicate, abaxial surfaces glabrous, adaxial surfaces appressed pubescent, hairs about 0.2 mm.
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, 1-3 cm long, 0.6-2.5 cm wide, ovate, contracted, exerted or partially included in the upper leaf sheaths, rachises somewhat viscid, pilose or glabrous;
primary branches 0.5-1.5 cm, appressed to the rachises, each terminating in a spikelet;
pulvini sparsely pilose or glabrous;
pedicels 0.2-2 mm, shorter than the spikelets, glabrous or hairy.
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.
5-26 mm long, 1.5-4.7 mm wide, linear to ovate, greenish to stramineous, with 16-60 florets;
disarticulation in the pistillate florets basipetal, the lemmas falling separately, staminate spikelets not or tardily disarticulating.
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.
unequal, ovate, hyaline, glabrous or sparsely hirsute;
lower glumes 0.8-1.6 mm, 1-veined;
upper glumes 1.5-2.5 mm, 1-3-veined;
lemmas (1.5)1.8-4 mm, ovate, hyaline to membranous, lateral veins conspicuous, greenish, apices acute to acuminate, sometimes prolonged into a mucro, mucros to 0.4 mm;
paleas 0.7-3.8 mm, hyaline, about 1/2 as long as the lemmas in pistillate florets, as long as the lemmas in staminate florets, keels scabridulous;
anthers 3, 1.4-2.2 mm, reddish to yellowish.
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.
0.4-0.6 mm, ellipsoid, somewhat laterally compressed, smooth, light reddish-brown.
= 40, 80, ca. 108.
= 60.
Eragrostis lugens
Eragrostis reptans
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 reptans grows in wet sand, gravel, and clay soils along rivers and lake margins from the United States to northern Mexico, at 0-400 m, frequently with Cynodon dactylon and Heliotropium. It flowers from April through November.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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