Common names: Flat-stemmed spike-rush éléocharide comprimée
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 84. Mentioned on page 83, 85, 86.

Culms compressed, 2–5 times as wide as thick, 0.5–1.8 mm wide. Distal leaf-sheaths without tooth. 2n = 24.


Phenology: Fruiting late spring–winter.
Habitat: Damp soil to shallow water of seasonally wet seeps and depressions in calcareous grasslands, meadows, limestone and dolomite barrens, glades, fens, ditches, waste places
Elevation: 0–2100 m

Distribution

V23 114-distribution-map.jpg

Ont., Que., Ala., Ark., Colo., D.C., Ill., Ind., Iowa, Kans., Ky., Md., Mich., Minn., Miss., Mo., Nebr., N.Y., Ohio, Pa., S.Dak., Tenn., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
greenish +, brown +, orange +  and yellow +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
cancellate or reticulate +  and rugulose +
terete;trigonous;biconvex +
color +  and texture +
0.6mm;0.8mm +
dark-brown +  and yellowbrown +
obscure +  and evident +
yellow;orangebrown +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
colorless hyaline +
mostly longer than wide +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
S. Galen Smith* +, Jeremy J. Bruhl* +, M. Socorro González-Elizondo* +  and Francis J. Menapace* +
Sullivant +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
shortened +
persistent +
enlarged +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
Flat-stemmed spike-rush +  and éléocharide comprimée +
persistent +
amplexicaulous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
8 cm80 mm <br />0.08 m <br /> (45 cm450 mm <br />0.45 m <br />) +
compressed +
spongy;firm;hard +
0.5mm;1.8mm +
2-5 times as wide as thick +
distally green +  and stramineous +
Ont. +, Que. +, Ala. +, Ark. +, Colo. +, D.C. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Md. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Y. +, Ohio +, Pa. +, S.Dak. +, Tenn. +, Va. +, W.Va. +  and Wis. +
0–2100 m +
colorless +, stramineous +, dark-brown +  and brown to very +
membranous +  and thinly papery +
hypogynous +  and subtending +
biconvex +  and trigonous +
Damp soil to shallow water of seasonally wet seeps and depressions in calcareous grasslands, meadows, limestone and dolomite barrens, glades, fens, ditches, waste places +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
rugulose +
variable +  and equaling +
with (1-)3-6(-30) bristles and/or scales +
Fruiting late spring–winter. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
2-fid +  and shallowly cut +
stramineous;medium brown or red brown or blackish brown +
Amer. J. Sci. Arts +
ascending +  and horizontal +
caudex-like +
short to rather +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
adventitious +
basal +  and proximal +
2-keeled +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
cylindric +
Illustrated +  and Endemic +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
2-fid +, some +  and 3-fid +
with flower +  and empty +
Eleocharis elliptica var. compressa +
Eleocharis compressa var. compressa +
Eleocharis compressa +
variety +
0.15mm;0.3mm +
depressed +  and pyramidal +
0.2mm +  and 0.35mm +
plant +  and mat-forming +