Eragrostis elongata

(Willd.) Jacq.
Common names: Long lovegrass
Introduced
Synonyms: Eragrostis diandra
Treatment appears in FNA Volume 25. Treatment on page 101.

Plants perennial; cespitose, with innovations, without rhizomes, not glandular. Culms 28-60 cm, erect to decumbent, glabrous below the nodes. Sheaths glabrous, apices sparsely hairy, hairs to 2 mm; ligules 0.3-0.4 mm; blades 5-20 cm long, 0.8-3 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, occasionally hairy near the base. Panicles terminal, (5) 8-20 (22) cm long, 1-3.5 cm wide, spicate to narrowly ovate, branches condensed into glomerate lobes; primary branches 0.8-3 cm, appressed or diverging up to 90° from the rachises, spikelet-bearing to the base; pulvini glabrous; pedicels 0.2-1.3 mm, flat¬tened, mostly appressed, all shorter than the spikelets. Spikelets 3-7 mm long, 1.8-2.4 mm wide, linear-lanceolate, stramineous with a reddish-purple tinge, with 8-18 florets; disarticulation acropetal, glumes first, then the lemmas, paleas persistent. Glumes subequal, 1.2-2 mm, narrowly lanceolate to lanceolate, membranous; lemmas 1.5-2.2 mm, lanceolate to ovate, leathery, greenish, lateral-veins conspicuous, apices acute; paleas 1.1-1.7 mm, hyaline, narrower than the lemmas, keels ciliate, cilia to 0.2 mm, apices obtuse to acute; anthers 2, 0.2-0.3 mm, purplish. Caryopses 0.4-0.5 mm, ovoid, not grooved, smooth, light-brown. 2n = unknown.

Distribution

S.C., Pacific Islands (Hawaii), Fla.

Discussion

Eragrostis elongata is native to southeastern Asia and Australia, where it grows in disturbed, sandy soils at 0-50 m. It was collected once near Washington, D.C., probably as an escape from the U.S. Department of Agriculture's experimental grass garden; it has not become established in the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis elongata"
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Obtuse (?) +  and Acute (?) +
Paul M. Peterson +
(Willd.) Jacq. +
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 /> (20 cm200 mm <br />0.2 m <br />) +
pubescent +  and glabrous +
flat +  and involute +
0.8mm;3mm +
not spikelike +
pubescent +  and glabrous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
membranous +
Long lovegrass +
branched +, simple +  and rooting +
erect +  and decumbent +
geniculate +
28 cm280 mm <br />0.28 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
S.C. +, Pacific Islands (Hawaii) +  and Fla. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
8 +  and 18 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
narrowly lanceolate +  and lanceolate +
subequal +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
uncinate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
not absent +
(1)3(5)-veined +
lanceolate +  and ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
sometimes longer +
ciliate +  and ciliolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
narrower +
8cm +  and 20cm +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
dry +  and fleshy +
diverging;appressed +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
spikelike +
Introduced +
stramineous with a reddish-purple tinge +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 +  and 60 +
linear-lanceolate +
1.8mm +  and 2.4mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Eragrostis diandra +
Eragrostis elongata +
Eragrostis +
species +
membranous +
7 +  and 13 +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +  and synoecious +