Eragrostis erosa

Scribn. ex Beal
Common names: Chihuahua lovegrass
Treatment appears in FNA Volume 25. Treatment on page 97.

Plants perennial; cespitose, with innovations, without rhizomes, not glandular. Culms 70-110 cm, erect, glabrous below the nodes. Sheaths 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 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 5-9 mm long, 1-3 mm wide, lanceolate, plumbeous, with 5-12 florets; disarticulation acropetal, glumes first, then the lemmas, paleas persistent. Glumes 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 0.8-1.6 mm, subellipsoid, terete to somewhat laterally compressed, with a well-developed adaxial groove, faintly striate, opaque, reddish-brown. 2n = unknown.

Discussion

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.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis erosa"
hairy +  and glabrous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
Obtuse (?) +  and Truncate (?) +
Paul M. Peterson +
Scribn. ex Beal +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
not +  and glabrous +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
pubescent +  and glabrous +
flat +  and involute +
1.5mm;3.8mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
reddish-brown +  and opaque +
compressed +, terete to somewhat +  and subellipsoid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Chihuahua lovegrass +
branched +, simple +  and rooting +
geniculate +
70 cm700 mm <br />0.7 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
not woody +
N.Mex. +  and Tex. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 12 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
lanceolate +  and ovate +
membranous +
not papillose-based +
uncinate +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
not absent +
(1)3(5)-veined +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
sometimes longer +
ciliate +  and ciliolate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
inconspicuous +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
narrower +
25cm +  and 45cm +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
dry +  and fleshy +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
hairy +  and glabrous +
spikelike +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1 +  and 60 +
lanceolate +
1mm +  and 3mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Eragrostis erosa +
Eragrostis +
species +
membranous +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
7 +  and 13 +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +  and synoecious +