Eragrostis frankii
Eragrostis plana
sandbar lovegrass, éragrostide de Frank
south African lovegrass
10-50 cm, erect to geniculate, glabrous, often with glandular pits below the nodes.
65-100 cm, erect, glabrous.
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.
flattened, smooth, shiny, glabrous or puberulent;
ligules 0.2-0.4 mm;
blades 15-50(70) cm long, 2-4 mm wide, folded, margins involute or revolute, abaxial surfaces glabrous or sparsely hairy, 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.
13-28 cm long, 2-8 cm wide, narrowly oblong to narrowly lanceolate, contracted to open;
primary branches 1-8 cm, appressed or diverging up to 30° from the rachises;
pulvini glabrous or hairy;
pedicels 1-7 mm, appressed, glabrous.
(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.
6-14 mm long, 1.3-2.5 mm wide, linear-oblong, greenish to plumbeous, with 9-14 florets;
disarticulation acropetal, paleas persistent.
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, membranous to hyaline;
lower glumes 0.4-1.2 mm, scalelike;
upper glumes 1-1.5 mm;
lemmas 1.8-3 mm, ovate, membranous, strongly keeled, keels with minute punctate glands, lateral veins conspicuous, apices acute to obtuse;
paleas 1.8-3 mm, hyaline to membranous, bases not projecting beyond the lemmas, apices obtuse to truncate;
anthers 3, 1.2-1.8 mm, reddish-purple.
0.4-0.7 mm, ovoid to rectangular-prismatic, striate, reddish-brown, adaxial surfaces flat or shallowly grooved, distal 2/3 opaque.
1-1.6 mm, rectangular-prismatic to ovoid, laterally compressed, adaxial surfaces deeply grooved, smooth, opaque, reddish-brown.
= 40, 80.
= 20.
Eragrostis frankii
Eragrostis plana
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 plana is native to southern Africa. It is known from two locations in the Flora region, both waste areas near sheep and cattle lots in Florence County, South Carolina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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