Eragrostis barrelieri |
Eragrostis sessilispica |
|
---|---|---|
Mediterranean love grass |
tumble lovegrass |
|
Habit | Plants annual; tufted, without innovations. | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. |
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. |
30-90 cm, erect or decumbent, glabrous 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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
Caryopses | 0.4-0.7 mm, ellipsoid, not grooved, smooth to faintly striate, light brown. |
0.9-1.5 mm, ovoid to pyriform, laterally flattened, tapering distally, smooth to faintly striate, brownish. |
2n | = 40. |
= 40. |
Eragrostis barrelieri |
Eragrostis sessilispica |
|
Distribution |
AL; AZ; CA; CO; FL; KS; LA; MA; MD; MO; NE; NM; NV; OK; SC; TN; TX; UT; PR; Virgin Islands
|
KS; NM; OK; TX |
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 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.) |
Source | FNA vol. 25, p. 83. | FNA vol. 25, p. 103. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Daveau | Buckley |
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