Eragrostis barrelieri |
Eragrostis erosa |
|
---|---|---|
Mediterranean love grass |
Chihuahua lovegrass, Chihuahuan 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. |
70-110 cm, erect, 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 sometimes on the upper margins, hairs to 4 mm, not papillose-based; ligules 0.2-0.4 mm; blades (8)12-30 cm long, 1.5-3.8 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, glabrous or sparsely hairy, hairs to 4 mm. |
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. |
25-45 cm long, (5)12-30 cm wide, broadly ovate, open; primary branches mostly 4-20 cm, diverging 20-90° from the rachises, capillary, sinuous; pulvini glabrous or hairy; pedicels 1-18 mm, appressed or divergent, proximal spikelets on each branch usually with pedicels shorter than 5 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. |
5-9 mm long, 1-3 mm wide, lanceolate, plumbeous, with 5-12 florets; disarticulation acropetal, glumes first, then the lemmas, 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. |
lanceolate to ovate, membranous; lower glumes 1.3-2.4 mm; upper glumes 1.6-2.6 mm; lemmas 2.4-3 mm, ovate, mostly membranous, hyaline near the margins and apices, lateral veins inconspicuous, apices acute; paleas 1.5-3 mm, hyaline, narrower than the lemmas, apices obtuse to truncate; anthers 3, 0.6-1.7 mm, purplish. |
Caryopses | 0.4-0.7 mm, ellipsoid, not grooved, smooth to faintly striate, light brown. |
0.8-1.6 mm, subellipsoid, terete to somewhat laterally compressed, with a well-developed adaxial groove, faintly striate, opaque, reddish-brown. |
2n | = 40. |
= unknown. |
Eragrostis barrelieri |
Eragrostis erosa |
|
Distribution |
AL; AZ; CA; CO; FL; KS; LA; MA; MD; MO; NE; NM; NV; OK; SC; TN; TX; UT; PR; Virgin Islands
|
NM; 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 erosa grows on rocky slopes and hills, at 1200-2300 m, often in association with Pinus edulis, Juniperus monosperma, and Bouteloua gracilis. Its range extends from New Mexico and western Texas to northern Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 83. | FNA vol. 25, p. 97. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Daveau | Scribn. ex Beal |
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