Eragrostis reptans

(Michx.) Nees
Common names: Creeping lovegrass
Synonyms: Neeragrostis reptans
Treatment appears in FNA Volume 25. Treatment on page 74.

Plants annual; unisexual, pistillate and staminate plants morphologically similar; mat-forming, without innovations, without glands. Culms rooting at the lower nodes, erect portion 5-20 cm, glabrous, pilose, or villous, particularly below the panicles. Sheaths mostly scabrous, margins sometimes with 0.1-0.4 mm hairs; ligules 0.1-0.6 mm; blades 1-4 cm long, 1-4.5 mm wide, flat or conduplicate, abaxial surfaces glabrous, adaxial surfaces appressed-pubescent, hairs about 0.2 mm. Panicles terminal, 1-3 cm long, 0.6-2.5 cm wide, ovate, contracted, exerted or partially included in the upper leaf-sheaths, rachises somewhat viscid, pilose or glabrous; primary branches 0.5-1.5 cm, appressed to the rachises, each terminating in a spikelet; pulvini sparsely pilose or glabrous; pedicels 0.2-2 mm, shorter than the spikelets, glabrous or hairy. Spikelets 5-26 mm long, 1.5-4.7 mm wide, linear to ovate, greenish to stramineous, with 16-60 florets; disarticulation in the pistillate florets basipetal, the lemmas falling separately, staminate spikelets not or tardily disarticulating. Glumes unequal, ovate, hyaline, glabrous or sparsely hirsute; lower glumes 0.8-1.6 mm, 1-veined; upper glumes 1.5-2.5 mm, 1-3-veined; lemmas (1.5) 1.8-4 mm, ovate, hyaline to membranous, lateral-veins conspicuous, greenish, apices acute to acuminate, sometimes prolonged into a mucro, mucros to 0.4 mm; paleas 0.7-3.8 mm, hyaline, about 1/2 as long as the lemmas in pistillate florets, as long as the lemmas in staminate florets, keels scabridulous; anthers 3, 1.4-2.2 mm, reddish to yellowish. Caryopses 0.4-0.6 mm, ellipsoid, somewhat laterally compressed, smooth, light reddish-brown. 2n = 60.

Discussion

Eragrostis reptans grows in wet sand, gravel, and clay soils along rivers and lake margins from the United States to northern Mexico, at 0-400 m, frequently with Cynodon dactylon and Heliotropium. It flowers from April through November.

Selected References

None.

Lower Taxa

None.

"prolonged" is not a number."decumbent" is not a number.

... more about "Eragrostis reptans"
appressed-pubescent +
reddish +  and yellowish +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Acute (?) +  and Acuminate (?) +
Paul M. Peterson +
(Michx.) Nees +
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 +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
pubescent +  and glabrous +
involute +, folded +  and flat +
1mm;4.5mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
light reddish-brown +
compressed +  and ellipsoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Creeping lovegrass +
geniculate +
2 cm20 mm <br />0.02 m <br /> (160 cm1,600 mm <br />1.6 m <br />) +
not woody +
Conn. +, N.J. +, N.Y. +, Md. +, Va. +, Wash. +, W.Va. +, Mich. +, Wis. +, Del. +, D.C +, Ark. +, Kans. +, Minn. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Calif. +, Iowa +, Pacific Islands (Hawaii) +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, La. +, Mo. +, N.Mex. +, Tex. +, Wyo. +, Puerto Rico +, Oreg. +, Idaho +, N.C. +, Tenn. +, S.C. +, Ala. +, Virgin Islands +, Pa. +, Miss. +, Nev. +, Colo. +, Ill. +, Ohio +, Utah +, Ga. +, Ind. +, Ariz. +, Mont. +  and Ky. +
not waisted +
capillary +
staminate +  and pistillate +
sometimes longer +
16 +  and 60 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
hirsute +  and glabrous +
unequal +
uncinate +
0.2 cm2 mm <br />0.002 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
(1)3(5)-veined +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
sometimes longer +
ciliate +  and ciliolate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
membranous +
inconspicuous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
open +  and simple +
1cm +  and 3cm +
0.6 cm6 mm <br />0.006 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
hairy +  and glabrous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dry +  and fleshy +
villous +, pilose +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
glabrous +  and pilose +
spikelike +
glabrous +  and pilose +
disarticulating +  and staminate +
greenish +  and stramineous +
0.5 cm5 mm <br />0.005 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
1 +  and 60 +
linear +  and ovate +
1.5mm +  and 4.7mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Neeragrostis reptans +
Eragrostis reptans +
Eragrostis +
species +
membranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
7 +  and 13 +
staminate +  and pistillate +
plant +  and mat-forming +
aquatic +  and terrestrial +