Eragrostis unioloides

(Retz.) Nees ex Steud.
Common names: Chinese lovegrass
Introduced
Treatment appears in FNA Volume 25. Treatment on page 85.

Plants annual; tufted, without innovations, without glands. Culms 10-50 cm, erect, glabrous below the nodes. Leaves mostly basal; sheaths mostly glabrous, apices pilose, hairs 0.4-3 mm; ligules 0.1-0.2 mm, ciliate; blades (1.8) 5-12 cm long, 2-6 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous and glabrous or sparsely hairy, hairs appressed. Panicles 6-15 cm long, 0.5-7 cm wide, ovate, open to contracted; primary branches 0.2-5 cm, appressed or diverging up to 70° from the rachises, glabrous; pulvini glabrous; pedicels 2-8 mm, glabrous. Spikelets 4-8 (10) mm long, (1.6) 2-4 mm wide, ovatelanceolate, loosely imbricate, straw-colored to purplish, with 12-42 florets; disarticulation acropetal, paleas not persistent, rachillas persistent. Glumes ovatelanceolate to lanceolate, hyaline to membranous; lower glumes 1-1.8 mm; upper glumes 1-2.2 mm; lemmas 1.5-1.9 mm, broadly ovate, membranous, lateral-veins raised, apices obtuse to acute; paleas 1.4-1.9 mm, hyaline, keels scabridulous, apices acute to obtuse; anthers 2, 0.2-0.4 mm, purplish. Caryopses 0.6-0.9 mm, ellipsoid, laterally compressed, not grooved, smooth, light-brown. 2n = 20, ca. 30.

Distribution

Md., Pacific Islands (Hawaii), Fla., Ga.

Discussion

Eragrostis unioloides is an Asian species that is now established in the southeastern United States, growing along roadsides and in disturbed ground, at 20-150 m.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis unioloides"
hairy +  and glabrous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Acute (?) +  and Obtuse (?) +
Paul M. Peterson +
(Retz.) Nees ex Steud. +
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 /> (12 cm120 mm <br />0.12 m <br />) +
pubescent +  and glabrous +
flat +  and involute +
2mm;6mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
compressed +  and ellipsoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Chinese lovegrass +
branched +, simple +  and rooting +
geniculate +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
not woody +
Md. +, Pacific Islands (Hawaii) +, Fla. +  and Ga. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
12 +  and 42 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
ovatelanceolate +  and lanceolate +
membranous +
uncinate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
(1)3(5)-veined +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
membranous +
sometimes longer +
ciliate +  and ciliolate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
membranous +
inconspicuous +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
concealed +  and prominent +
2 +  and 1 +
not persistent +
2-keeled +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
6cm +  and 15cm +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
dry +  and fleshy +
diverging;appressed +
0.2 cm2 mm <br />0.002 m <br /> (5 cm50 mm <br />0.05 m <br />) +
spikelike +
Introduced +
straw-colored +  and purplish +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 +  and 60 +
ovatelanceolate +
2mm +  and 4mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Eragrostis unioloides +
Eragrostis +
species +
membranous +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
7 +  and 13 +
rhizomatous +  and stoloniferous +
aquatic +  and terrestrial +
dioecious +  and synoecious +