Eragrostis barrelieri |
Eragrostis capillaris |
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Mediterranean love grass |
lace grass, lace lovegrass |
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Habit | Plants annual; tufted, without innovations. | Plants annual; tufted, without innovations, without glands. |
Culms | (5)10-60 cm, erect or decumbent, much-branched near the base, with a ring of glandular tissue below the nodes, rings often shiny or yellowish. |
(15)20-50(60) cm, erect, glabrous, often shiny below the nodes. |
Sheaths | hairy at the apices, hairs to 4 mm; ligules 0.2-0.5 mm, ciliate; blades 1.5-10 cm long, 1-3(5) mm wide, flat, abaxial surfaces glabrous, adaxial surfaces glabrous, sometimes scabridulous, occasionally with white hairs to 3 mm, margins without crateriform glands. |
pilose along the margins, apices hirsute, hairs to 7 mm; ligules 0.2-0.5 mm, ciliate; blades (6)8-20(30) cm long, (1)2-5 mm wide, flat, abaxial surfaces smooth, glabrous, adaxial surfaces scabridulous, with long scattered hairs. |
Panicles | 4-20 cm long, 2.2-8(10) cm wide, ovate, open to contracted, rachises with shiny or yellowish glandular spots or rings below the nodes; primary branches 0.5-6 cm, diverging 20-100° from the rachises; pulvini glabrous; pedicels 1-4 mm, stout, stiff, divergent, without glandular bands. |
(10)15-45(55) cm long, (7)10-25 cm wide, to 2/3 the height of the plants, elliptic to ovate, open, rachises without glandular pits; primary branches (2)5-15 cm, diverging 20-90° from the rachises, capillary, naked basally; pulvini glabrous; pedicels (4)5-25 mm, divergent, scabridulous. |
Spikelets | 4-7(11) mm long, 1.1-2.2 mm wide, narrowly ovate, reddish-purple to greenish, occasionally grayish, with 7-12(20) florets; disarticulation acropetal, paleas persistent. |
(1.4)2-5 mm long, 1-1.3(1.4) mm wide, ovate to lanceolate, plumbeous, occasionally reddish-purple, with 2-5(7) florets; disarticulation acropetal, paleas persistent. |
Glumes | broadly ovate, membranous, 1-veined; lower glumes 0.9-1.4 mm; upper glumes 1.2-1.6 mm; lemmas 1.4-1.8 mm, broadly ovate, membranous, apices acute to obtuse; paleas 1.3-1.7 mm, hyaline, keels scabrous, scabridities to 0.1 mm, apices obtuse to acute; anthers 3, 0.1-0.2 mm, reddish-brown. |
narrowly lanceolate to lanceolate, hyaline; lower glumes 1-1.2 mm, narrower than the upper glumes; upper glumes 1.2-1.4 mm; lemmas 1.2-1.7 mm, broadly ovate, membranous, keels scabridulous, lateral veins inconspicuous, apices acute; paleas 1.2-1.6 mm, hyaline, keels almost smooth to scabrous, scabridities to 0.1 mm, apices acute to obtuse; anthers 3, 0.2-0.3 mm, reddish-brown. |
Caryopses | 0.4-0.7 mm, ellipsoid, not grooved, smooth to faintly striate, light brown. |
0.4-0.7 mm, ovoid to rectangular-prismatic, adaxial surfaces deeply grooved, striate, bases reddish-brown, distal 2/3 opaque. |
2n | = 40. |
= 50, 100. |
Eragrostis barrelieri |
Eragrostis capillaris |
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Distribution |
AL; AZ; CA; CO; FL; KS; LA; MA; MD; MO; NE; NM; NV; OK; SC; TN; TX; UT; PR; Virgin Islands
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AL; AR; CA; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; ON; QC
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Discussion | Eragrostis barrelieri is a European species that is now naturalized in the Flora region, primarily in the south-western United States. It grows on gravelly roadsides, in gardens, and other disturbed, sandy sites, especially near railroad yards, at 10-2000 m. The ring of glandular tissue is most conspicuous below the upper cauline nodes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis capillaris is native to the eastern portion of the Flora region. It grows in open, dry, sandy river-banks, floodplains, rocky roadsides, and gravel pits, at 150-1500 m, usually in association with Pinus, Quercus, Carrya, and Liquidambar styraciflua. Its range extends into northeastern Mexico. Eragrostis capillaris resembles E. frankii, but differs in its lack of glandular pits, deeply grooved caryopses, longer pedicels, pilose sheath margins, and larger panicles. The two species are sympatric over much of the eastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 83. | FNA vol. 25, p. 79. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Daveau | (L.) Nees |
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