Eragrostis polytricha
Eragrostis sessilispica
hairysheath lovegrass
tumble lovegrass
30-62 cm, erect, glabrous and shiny below the nodes.
30-90 cm, erect or decumbent, glabrous below the nodes.
sometimes densely pilose dorsally and on the collars, margins and apices hairy, hairs to 5 mm;
ligules 0.2-0.4 mm;
blades 5-20(33) cm long, 1-3.5 mm wide, involute to flat, both surfaces with scattered hairs, adaxial surfaces densely hairy behind the ligules, hairs to 7 mm.
hairy at the apices and on the collars, sometimes also on the distal portion of the margins, hairs to 5 mm;
ligules 0.4-0.5 mm;
blades 5-30 cm long, 1-3 mm wide, usually involute, sometimes flat, abaxial surfaces glabrous or sparsely pilose, hairs to 5 mm, adaxial surfaces scabridulous.
15-25 cm long, 5-27 cm wide, ovate, open;
primary branches 0.6-15 cm, diverging up to 90° from the rachises, capillary, naked basally;
pulvini hairy, hairs to 8 mm;
pedicels 1.4-10(16) mm, divergent.
20-65 cm long, 10-35 cm wide, ovate, open;
primary branches 2-20(24) cm, widely spaced, diverging 20-100° from the rachises, not rebranched, naked basally;
pulvini hairy;
pedicels 0-12 mm, appressed, proximal spikelets on each branch sessile or subsessile, the pedicels shorter than 0.4 mm.
(2.5)3-5 mm long, 1.1-1.6 mm wide, narrowly lanceolate to linear-oblong, plumbeous, with 4-9 florets;
disarticulation acropetal, paleas persistent.
5-13 mm long, 1.4-3 mm wide, oblong to oblanceolate, stramineous to reddish-purple, with 3-12 florets;
disarticulation tardy, basipetal, in the rachilla below the florets, glumes persistent.
broadly ovate to narrowly lanceolate, hyaline to membranous;
lower glumes 1.1-1.6 mm;
upper glumes 1.2—1.8 mm;
lemmas 1.2-1.8 mm, broadly ovate, membranous throughout, lateral veins inconspicuous, apices acute;
paleas 1.1-1.7 mm, membranous to hyaline, narrower than the lemmas, apices obtuse;
anthers 3, 0.3—0.5 mm, reddish-purple.
lanceolate, broad basally, indurate;
lower glumes 2.5-6 mm;
upper glumes 3-6 mm, apices acuminate;
lemmas 3-5 mm, narrowly ovate to lanceolate, indurate, apices acuminate;
paleas 2.4-4.6 mm, indurate, gibbous basally but the sides not projecting beyond the lemmas, keels ciliolate, apices obtuse;
anthers 3, 0.3-0.5 mm, reddish-brown.
0.5-0.8 mm, obovoid to somewhat prism-shaped, laterally compressed, with a well-developed adaxial groove, finely striate, opaque to translucent, reddish-brown.
0.9-1.5 mm, ovoid to pyriform, laterally flattened, tapering distally, smooth to faintly striate, brownish.
= 60, 80.
= 40.
Eragrostis polytricha
Eragrostis sessilispica
Eragrostis polytricha grows in sandy and rocky areas, at 0-30 m, usually in open pinelands. It is native to Florida but its primary range lies to the south of the Flora region, from southern Mexico through Central America to Venezuela, Chile, and Argentina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Eragrostis sessilispica grows in prairies, limestone mesas, partial forest openings, and grasslands, generally in sandy soils, at 0-1220 m, often in association with Prosopsis and Quercus. Its range extends into northern Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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