Eragrostis mexicana subsp. virescens

(J. Presl) S.D. Koch & Sánchez Vega
Synonyms: Eragrostis virescens Eragrostis orcuttiana
Treatment appears in FNA Volume 25. Treatment on page 78.

Culms and sheaths without glandular depressions. Spikelets 0.7-1.4 mm wide, linear to linear-lanceolate. Lower glumes 0.7-1.7 mm; sum of spikelet width and lower glume length 1.5-3.1 mm.

Discussion

Eragrostis mexicana subsp. virescens has a disjunct distribution, growing in California and western Nevada and, in South America, from Ecuador to Chile, southern Brazil, and northern Argentina. It has also been found, as an introduction, at various other locations in North America, including eastern North America.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Obtuse (?) +  and Truncate (?) +
Paul M. Peterson +
(J. Presl) S.D. Koch & Sánchez Vega +
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 +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
pubescent +  and glabrous +
involute +, folded +  and flat +
2mm;7mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
opaque +  and reddish-brown +
compressed +, ovoid +  and rectangular-prismatic +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
branched +, simple +  and rooting +
geniculate +
10 cm100 mm <br />0.1 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
not woody +
Wash. +, Del. +, Oreg. +, Wis. +, Iowa +, N.Dak. +, Fla. +, N.Mex. +, Tex. +, Idaho +, B.C. +, Ont. +, Nev. +, Colo. +, Calif. +, Ind. +, Maine +, Ill. +, Ariz. +, Md. +, Mass. +, Utah +  and S.C. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 11 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
ovate +  and lanceolate +
subequal +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
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 +
with a few hairs +  and glabrous +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
membranous +
sometimes longer +
ciliate +  and ciliolate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
open +  and simple +
10cm +  and 40cm +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
7 cm70 mm <br />0.07 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
dry +  and fleshy +
solitary +  and whorled +
15 cm150 mm <br />0.15 m <br /> (?) +
diverging;appressed +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
spikelike +
channeled +  and angled +
gray-green +  and purplish +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 +  and 60 +
linear +  and linear-lanceolate +
0.7mm +  and 1.4mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Eragrostis virescens +  and Eragrostis orcuttiana +
Eragrostis mexicana subsp. virescens +
Eragrostis mexicana +
subspecies +
membranous +
7 +  and 13 +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +  and synoecious +