Eragrostis trichodes
Eragrostis silveana
sand lovegrass
Silveus' lovegrass
30-120 (160) cm, erect, glabrous and non-glandular below the nodes.
45-60 cm, erect, often glandular below the nodes, sometimes viscid.
sometimes villous along the margins, apices hairy, hairs to 5 mm;
ligules 0.3-0.5 mm;
blades 15-46(65) cm long, 1.5-8 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes also pilose on the basal 1/4, hairs to 4 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.
30-80 cm long, 6-30 cm wide, oblong to ovoid, diffuse;
primary branches 2-35 cm, diverging 20-90° from the rachises, naked basally;
pulvini hairy or glabrous;
pedicels 2-22 cm, diverging, capillary.
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.
3-15 mm long, 1.5—3.6 mm wide, ovate to lanceolate, greenish-yellow with a reddish-purple tinge, with (2)4-18 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.
subequal, 1.8-4 mm, narrowly ovate to linear-lanceolate, membranous, apices acuminate;
upper glumes as long as or longer than the basal lemmas;
lemmas 2.2-3.5 mm, broadly ovate to lanceolate, membranous, strongly keeled, keels not glandular, lateral veins conspicuous, apices acute;
paleas 1.8-2.8 mm, hyaline, narrower than the lemmas, keels ciliolate, apices obtuse to truncate;
anthers 3, 1-1.6 mm, purplish.
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.
0.8-1.3 mm, rectangular-prismatic, somewhat laterally compressed, with a wide, deep adaxial groove, faintly striate, opaque, dark reddish-brown.
0.5-0.6 mm, ellipsoid, terete in cross section, neither ridged nor grooved, faintly striate, reddish-brown.
= 40.
= unknown.
Eragrostis trichodes
Eragrostis silveana
Eragrostis trichodes grows in sandy to gravelly prairies, open sandy woods, rocky slopes, and roadsides, at 100-2150 m, often in associations with Quercus marilandica, Q. stellata, Juniperus, and Redfieldia flexuosa. It is endemic to the contiguous United States, and is available commercially as an ornamental. Records from outside the primary range probably reflect introductions.
(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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