Eleocharis cellulosa

Torrey

Ann. Lyceum Nat. Hist. New York 3: 298. 1836.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 118. Mentioned on page 117.

Plants perennial; rhizomes 1–4 mm thick, soft to hard, longer internodes 3–7.5 cm, scales 5 mm, tubers absent. Culms terete or obtusely trigonous, 30–80 cm × 1–5 mm, soft to hard, not septate-nodulose, internally spongy, transverse septa incomplete; plants never forming filiform, flaccid culms. Leaves: distal leaf-sheaths persistent, membranous, apex acute to acuminate, often prolonged into a slender awn to 4 mm. Spikelets not proliferous, 14–54 × 3–5.6 mm; rachilla joints without winglike remnants of floral scales; proximal scale empty, amplexicaulous, 2.5–4.9 mm; floral scales 40–180, 2–3 per mm of rachilla, stramineous to pale-brown, flanks sometimes minutely dotted reddish, usually with pale to dark-brown, reddish, or purplish submarginal band, obovate to suborbicular, widest in middle, 3.4–4.5 (–6) × 3–4.8 mm, cartilaginous, membranous toward margins, margins broadly translucent, membranous, apex rounded. Flowers: perianth bristles 6–7, medium brown to pale-brown or reddish, slender, proximally slightly flattened, subequal to unequal, mostly exceeding achene, 2–3.4 mm, smooth or sometimes finely retrorsely spinulose; anthers reddish-brown, 1.7–2.5 mm; styles 3-fid. Achenes brown, biconvex, obpyriform, 2.2–2.8 × 1.3–1.9 mm, markedly sculptured at 10–15X, each face with (17–) 20–24 rows of isodiametric to slightly transversely elongated cells, apex narrowed to a stout, often pale, spongy region 0.8–1.1 mm wide at base, 1/2–3/4 of achene width. Tubercles dark-brown, lamelliform to pyramidal, 0.1–0.5 × 0.2–0.5 mm.


Phenology: Fruiting late spring–winter.
Habitat: Brackish to saline marshes, shores, ditches, mostly coastal, often abundant or dominant
Elevation: 0 (Florida)–600 (Arkansas, Texas) m

Distribution

V23 179-distribution-map.jpg

Ala., Ark., Fla., Ga., Miss., N.C., S.C., Tex., Mexico, West Indies, Central America (Nicaragua)

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."thick" is not a number.

... more about "Eleocharis cellulosa"
0.22 cm2.2 mm <br />0.0022 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
sculptured +
obpyriform;biconvex +
constricted +
1.3mm;1.9mm +
reddish-brown +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
prolonged +
narrowed;rounded;acute;acuminate +
M. Socorro González-Elizondo +
Torrey +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
persistent +
enlarged +
Undefined subg. Limnochloa +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
enlarged +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
filiform +, not septate-nodulose +, trigonous +  and terete +
flaccid;spongy;soft;hard +
1mm;5mm +
Ala. +, Ark. +, Fla. +, Ga. +, Miss. +, N.C. +, S.C. +, Tex. +, Mexico +, West Indies +  and Central America (Nicaragua) +
0 (Florida)–600 (Arkansas, Texas) m +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
dotted reddish +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
membranous +
stramineous +  and pale-brown +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
papery +  and cartilaginous +
subtending +
biconvex +  and trigonous +
Brackish to saline marshes, shores, ditches, mostly coastal, often abundant or dominant +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
3 cm30 mm <br />0.03 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
membranous +
0.3 cm3 mm <br />0.003 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
distinct +
subequal +  and unequal +
0.2 cm2 mm <br />0.002 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting late spring–winter. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
amplexicaulous +  and empty +
stramineous;medium brown or red brown or blackish brown +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.49 cm4.9 mm <br />0.0049 m <br />) +
Ann. Lyceum Nat. Hist. New York +
0.8mm;1.1mm +
ascending +  and horizontal +
caudex-like +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
adventitious +
basal +  and proximal +
2-keeled +
5 cm50 mm <br />0.05 m <br /> (?) +
cylindric +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
W1 +  and Illustrated +
1.4 cm14 mm <br />0.014 m <br /> (5.4 cm54 mm <br />0.054 m <br />) +
not proliferous +
terete;cylindric;narrowly ellipsoid +
0.9 cm9 mm <br />0.009 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
3mm;5.6mm +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
pale +  and dark-brown reddish or purplish +
Eleocharis (sect. Undefined) ser. Mutatae +
Eleocharis cellulosa +
Eleocharis subg. Limnochloa +
species +
0.1mm;0.5mm +
lamelliform +  and pyramidal +
0.2mm +  and 0.5mm +
stoloniferous +  and rhizomatous +