Sporobolus teretifolius

R.M. Harper
Common names: Wireleaf dropseed
Endemic
Treatment appears in FNA Volume 25. Treatment on page 135.

Plants perennial; cespitose, not rhizomatous. Culms (20) 35-80 (100) cm, wiry. Sheaths shiny and indurate basally, glabrous or appressed hairy elsewhere, hairs to 4 mm; ligules 0.2-0.4 mm; blades (10) 25-54 cm long, 0.5-1.2 mm wide, terete or subterete at least basally, sometimes channeled for portions of their length, green to yellowish-green, senescing or turning tan in late fall, glabrous on both surfaces or the adaxial surface sparsely hairy basally, margins smooth. Panicles 10-26 cm long, 1-9 cm wide, open (contracted when immature), not diffuse, narrowly pyramidal to ovate; lower nodes with 1-2 (3) branches; primary branches 1-8 cm, ascending or spreading to 40° from the rachis, not capillary, without spikelets on the lower 1/3; secondary branches spreading; pulvini hairy; pedicels 3-18 mm, longer than the spikelets, spreading, with scattered ascending hairs. Spikelets 4-5.6 mm, purplish-brown. Glumes unequal, linear-lanceolate, membranous; lower glumes 2-3.8 mm, 0.5-0.8 times as long as the upper glumes; upper glumes 4-5.6 mm, usually longer than the florets; lemmas 3.4-4.4 mm, ovate, membranous, glabrous, acute; paleas 3.3-4.4 mm, ovate, membranous, glabrous; anthers 1.5-2.6 mm, purplish. Fruits not seen. 2n = unknown.

Distribution

N.C., S.C., Fla., Ala., Ga.

Discussion

Sporobolus teretifolius is restricted to the south¬eastern United States, where it grows in wet to moist flatwoods and savannahs, at elevations of 10-150 m.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."-0.8timesaslongastheupperglumes" is not declared as a valid unit of measurement for this property.

... more about "Sporobolus teretifolius"
quadrangular +, fusiform +, obovoid +  and ellipsoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Paul M. Peterson +, Stephan L. Hatch +  and Alan S. Weakley +
R.M. Harper +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
tan +, green +  and yellowish-green +
25 cm250 mm <br />0.25 m <br /> (54 cm540 mm <br />0.54 m <br />) +
channeled +, subterete +  and terete +
0.5mm;1.2mm +
spikelike +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Wireleaf dropseed +
35 cm350 mm <br />0.35 m <br /> (80 cm800 mm <br />0.8 m <br />) +
not woody +
N.C. +, S.C. +, Fla. +, Ala. +  and Ga. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
bisexual +  and fertile +
round +  and compressed +
reduced +
quadrangular +, fusiform +, obovoid +  and ellipsoid +
shorter or longer +
subtending +
linear-lanceolate +
unequal +
membranous +
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 +
acute +  and ovate +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
membranous +
sometimes longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
inconspicuous +
0.2 cm2 mm <br />0.002 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
concealed +  and prominent +
2 +  and 1 +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
membranous +
not diffuse +
10cm +  and 26cm +
narrowly pyramidal +  and ovate +
1 cm10 mm <br />0.01 m <br /> (9 cm90 mm <br />0.09 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
mucilaginous +
adherent +  and free +
dry +  and fleshy +
spreading;ascending +
not capillary +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
spikelike +
hairy +, appressed +  and glabrous +
purplish-brown +
1 +  and 60 +
rounded +  and laterally compressed +
0.4 cm4 mm <br />0.004 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Sporobolus teretifolius +
Sporobolus +
species +
membranous +
0.4 cm4 mm <br />0.004 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
quadrangular +, fusiform +, obovoid +  and ellipsoid +
7 +  and 13 +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +