Eragrostis polytricha

Nees
Common names: Hairysheath lovegrass
Treatment appears in FNA Volume 25. Treatment on page 95.

Plants perennial; cespitose, with innovations, without rhizomes, not glandular. Culms 30-62 cm, erect, glabrous and shiny below the nodes. Sheaths sometimes densely pilose dorsally and on the collars, margins and apices hairy, hairs to 5 mm; ligules 0.2-0.4 mm; blades 5-20 (33) cm long, 1-3.5 mm wide, involute to flat, both surfaces with scattered hairs, adaxial surfaces densely hairy behind the ligules, hairs to 7 mm. Panicles 15-25 cm long, 5-27 cm wide, ovate, open; primary branches 0.6-15 cm, diverging up to 90° from the rachises, capillary, naked basally; pulvini hairy, hairs to 8 mm; pedicels 1.4-10 (16) mm, divergent. Spikelets (2.5) 3-5 mm long, 1.1-1.6 mm wide, narrowly lanceolate to linear-oblong, plumbeous, with 4-9 florets; disarticulation acropetal, paleas persistent. Glumes broadly ovate to narrowly lanceolate, hyaline to membranous; lower glumes 1.1-1.6 mm; upper glumes 1.2—1.8 mm; lemmas 1.2-1.8 mm, broadly ovate, membranous throughout, lateral-veins inconspicuous, apices acute; paleas 1.1-1.7 mm, membranous to hyaline, narrower than the lemmas, apices obtuse; anthers 3, 0.3—0.5 mm, reddish-purple. Caryopses 0.5-0.8 mm, obovoid to somewhat prism-shaped, laterally compressed, with a well-developed adaxial groove, finely striate, opaque to translucent, reddish-brown. 2n = 60, 80.

Discussion

Eragrostis polytricha grows in sandy and rocky areas, at 0-30 m, usually in open pinelands. It is native to Florida but its primary range lies to the south of the Flora region, from southern Mexico through Central America to Venezuela, Chile, and Argentina.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis polytricha"
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
obtuse +  and acute +
Paul M. Peterson +
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 +
involute +  and flat +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
reddish-brown +, opaque +  and translucent +
compressed +, prism--shaped +  and obovoid to somewhat +
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 +
Hairysheath lovegrass +
branched +, simple +  and rooting +
geniculate +
30 cm300 mm <br />0.3 m <br /> (62 cm620 mm <br />0.62 m <br />) +
not woody +
Fla. +  and Tex. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
4 +  and 9 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
broadly ovate +  and narrowly lanceolate +
membranous +
uncinate +
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
not absent +
(1)3(5)-veined +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 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 +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
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 />) +
membranous +
narrower +
15cm +  and 25cm +
5 cm50 mm <br />0.05 m <br /> (27 cm270 mm <br />0.27 m <br />) +
16 cm160 mm <br />0.16 m <br /> (?) +
0.14 cm1.4 mm <br />0.0014 m <br /> (1 cm10 mm <br />0.01 m <br />) +
dry +  and fleshy +
0.6 cm6 mm <br />0.006 m <br /> (15 cm150 mm <br />0.15 m <br />) +
spikelike +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 +  and 60 +
narrowly lanceolate +  and linear-oblong +
1.1mm +  and 1.6mm +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Eragrostis polytricha +
Eragrostis +
species +
membranous +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
7 (?) +  and 13 (?) +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +  and synoecious +