Eragrostis lugens
Eragrostis silveana
mourning lovegrass
Silveus' lovegrass
30-70 cm, erect, sometimes geniculate, glabrous below the nodes.
45-60 cm, erect, often glandular below the nodes, sometimes viscid.
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.
often viscid, sometimes sparsely pilose, hairy at the apices, hairs to 6 mm;
ligules 0.2-0.3 mm;
blades 8-25 cm long, 2-4 mm wide, flat to involute, glabrous, sometimes viscid.
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.
20-35(42) cm long, 10-22 cm wide, broadly ovate, open, bases included in the uppermost leaf sheaths;
primary branches 5-14 cm, diverging 20-90° from the rachises, capillary, sometimes viscid, naked basally;
pulvini hairy, hairs to 6 mm;
pedicels (1)1.5-12 mm, diverging or appressed.
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.
(2.5)3-4.8 mm long, 0.9-1.4 mm wide, linear-lanceolate, reddish-purple, with 4-9 florets;
disarticulation basipetal, glumes 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.
lanceolate, membranous;
lower glumes 0.9-1.2 mm;
upper glumes 1-1.3 mm;
lemmas 1.1-1.4 mm, ovate to lanceolate, membranous, 3-veined, apices acute;
paleas 1-1.4 mm, hyaline, not wider than the lemmas, apices obtuse;
anthers 3, 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.
0.5-0.6 mm, ellipsoid, terete in cross section, neither ridged nor grooved, faintly striate, reddish-brown.
= 40, 80, ca. 108.
= unknown.
Eragrostis lugens
Eragrostis silveana
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 silveana grows in various open habitats, from sandy prairies to clay loam flats, near roadsides, railroads, and fields at 0-100 m. Its range is limited to the coastal plain of Texas and northern Mexico. Morphologically, E. silveana is somewhat intermediate between E. spectabilis and E. curtipedicellata, and grows where the distribution of these two species overlaps.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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