Eragrostis frankii
Eragrostis pilosa
sandbar lovegrass, éragrostide de Frank
eragrostide poilue, India lovegrass, Indian love grass
10-50 cm, erect to geniculate, glabrous, often with glandular pits below the nodes.
8-45(70) cm, erect or geniculate, glabrous, occasionally with a few glandular depressions.
mostly glabrous, apices hirsute, hairs to 4 mm, often also with glandular pits;
ligules 0.2-0.5 mm, ciliate;
blades (2)4-10(21) cm long, 1-4 mm wide, flat to involute, glabrous abaxially, scabridu-lous adaxially.
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.
4-20 cm long, less than 1/2 the height of the plants, 2-10(14) cm wide, narrowly elliptic, open;
primary branches 2-6 cm, compact, diverging 20-70° from the rachises, capillary, sometimes with glandular pits, naked basally;
pulvini glabrous;
pedicels 1.5-5 mm, divergent.
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.
(1.7)2-4(5.6) mm long, 1-2(2.5) mm wide, broadly ovate to lanceolate, plumbeous to reddish-purple, with 3-6 florets;
disarticulation acropetal, paleas persistent.
(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.
narrowly lanceolate to lanceolate, hyaline;
lower glumes 1-1.5 mm;
upper glumes 1-1.8 mm;
lemmas 1.1-1.6 mm, broadly ovate, membranous, lateral veins inconspicuous, apices acute;
paleas 1-1.5 mm, hyaline, keels scabridulous, apices obtuse;
anthers 2 or 3, 0.2-0.3 mm, purplish.
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.
0.4-0.7 mm, ovoid to rectangular-prismatic, striate, reddish-brown, adaxial surfaces flat or shallowly grooved, distal 2/3 opaque.
0.5-1 mm, obovoid to prism-shaped, adaxial surfaces flat, smooth to faintly striate, light brown.
= 40, 80.
= 40.
Eragrostis frankii
Eragrostis pilosa
Eragrostis frankii is native in the central and eastern United States, but it has been found, as an introduction, in southern Ontario, and appears to be increasingly common in the northeastern United States. It grows in moist meadows, along streams and sand bars, in forest openings, and along roadsides, at 5-1500 m, usually in association with Pinus, Quercus, Acer, and Fagus grandiflora. The record from Santa Fe County, New Mexico, is based on a specimen collected by Fendler in 1847; there are no other collections from the state. Fendler's specimens seem to represent either an accidental introduction that did not become established or a labeling error.
Eragrostis frankii is similar to E. capillaris, but differs in its frequent possession of glandular pits, its flat or more shallowly grooved caryopses, shorter pedicels, and glabrous sheath margins, and in having panicles that are usually less than half as long as the culms.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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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