Eragrostis pilosa
Eragrostis swallenii
eragrostide poilue, India lovegrass, Indian love grass
Swallen's lovegrass
8-45(70) cm, erect or geniculate, glabrous, occasionally with a few glandular depressions.
35-70 cm, erect, with glandular bands below the nodes.
mostly glabrous, occasionally glandular, apices hirsute, hairs to 3 mm;
ligules 0.1-0.3 mm, ciliate;
blades 2-15(20) cm long, 1-2.5(4) mm wide, flat, abaxial surfaces glabrous, occasionally with glandular pits along the midrib, adaxial surfaces scabridulous.
hairy on the margins and at the apices, hairs to 4 mm;
ligules 0.2-0.5 mm;
blades (8)10-25(30) cm long, 1.5-4 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes also sparsely hairy, hairs to 4 mm.
4-20(28) cm long, 2-15(18) cm wide, ellipsoid to ovoid, diffuse;
primary branches 1-10 cm, diverging 10-80°(110°) from the rachises, capillary, whorled on the lowest 2 nodes, rarely glandular;
pulvini glabrous or hairy;
pedicels 1-10 mm, flexible, appressed or divergent.
12-30 cm long, 5-16 cm wide, ovate, open, an oblique glandular ring present below the lowest rachis node;
primary branches 2-10 cm, diverging 10-70° from the rachises, flexible;
pulvini glabrous;
pedicels 1.5-14 mm, divergent, with a glandular band.
(2)3.5-6(10) mm long, 0.6-1.4 mm wide, linear-oblong to narrowly ovate, plumbeous, with (3)5-17 florets;
disarticulation acropetal, paleas tardily deciduous, rachillas persisting longer than the paleas.
5-16 mm long, 1.2-2.3 mm wide, linear-lanceolate, plumbeous to dark reddish-purple, with 5-25 florets;
disarticulation acropetal, paleas persistent.
narrowly ovate to lanceolate, hyaline;
lower glumes 0.3-0.6(0.8) mm;
upper glumes 0.7-1.2(1.4) mm;
lemmas 1.2-1.8(2) mm, ovate-lanceolate, membranous to hyaline, grayish-green proximally, reddish-purple distally, lateral veins inconspicuous, apices acute;
paleas 1-1.6 mm, membranous to hyaline, keels scabridulous to scabrous, apices obtuse;
anthers 3, 0.2-0.3 mm, purplish.
ovate, membranous to hyaline;
lower glumes 1.1-1.5 mm;
upper glumes 1.4-2 mm;
lemmas 1.5-2.5 mm, ovate, membranous, strongly keeled, keels without glands, lateral veins conspicuous, apices acute;
paleas 1.2-2.1 mm, hyaline, narrower than the lemmas, apices obtuse to truncate;
anthers 3, 0.3-0.5 mm, purplish.
0.5-1 mm, obovoid to prism-shaped, adaxial surfaces flat, smooth to faintly striate, light brown.
0.8-1.1 mm, rectangular-prismatic to ellipsoid, somewhat laterally compressed, with a well-developed adaxial groove, smooth, faintly striate, mostly opaque, light reddish-brown.
= 40.
= 84.
Eragrostis pilosa
Eragrostis swallenii
Eragrostis pilosa is native to Eurasia but has become naturalized in many parts of the world. In the Flora region, it grows in forest margins and disturbed sites such as roadsides, railroad embankments, gardens, and cultivated fields, at 0-2500 m.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Eragrostis swallenii grows in sandy sites along coastal grasslands and roadsides, often with Andropogon and Spartina, at 30-150 m. Its range extends around the Gulf coast from Texas to Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants with numerous glandular pits scattered over the whole plant, especially on the midribs of the sheaths and blades; lemmas 1.8-2 mm long | var. perplexa |
1. Plants with a few glandular pits scattered on the culms or without any glandular pits; lemmas 1.2-1.8 mm long | var. pilosa |
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