Eleocharis compressa var. acutisquamata

(Buckley) S. G. Smith

Novon 11: 249. 2001.

IllustratedEndemic
Basionym: Eleocharis acutisquamata Buckley Proc. Acad. Nat. Sci. Philadelphia 14: 10. 1863
Treatment appears in FNA Volume 23. Treatment on page 84. Mentioned on page 83.

Culms subterete to slightly compressed, to 2 times as wide as thick, (0.2–) 0.5–1 mm wide. Distal leaf-sheaths often with tooth, to 0.1 (–0.5) mm.


Phenology: Fruiting spring–summer.
Habitat: Seasonally wet seeps and depressions in calcareous grasslands, meadows, open oak woods, ditches, sometimes limestone, rarely saline marsh or lakeshores
Elevation: 10–2300 m

Distribution

V23 115-distribution-map.jpg

B.C., Man., Sask., Colo., Ill., Iowa, Kans., Minn., Mo., Nebr., N.Mex., N.Dak., Okla., S.Dak., Tex.

Discussion

Some specimens herein included in E. compressa var. acutisquamata are intermediate with E. elliptica in their floral scales, including the single record from British Columbia. Eleocharis compressa var. acutisquamata probably occurs in Alberta; I have not seen specimens.

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* +
(Buckley) S. G. Smith +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
shortened +
persistent +
enlarged +
Eleocharis acutisquamata +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
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 />) +
subterete +  and slightly compressed +
spongy;firm;hard +
0.5mm;1mm +
0-2 times as wide as thick +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
distally green +  and stramineous +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
B.C. +, Man. +, Sask. +, Colo. +, Ill. +, Iowa +, Kans. +, Minn. +, Mo. +, Nebr. +, N.Mex. +, N.Dak. +, Okla. +, S.Dak. +  and Tex. +
10–2300 m +
colorless +, stramineous +, dark-brown +  and brown to very +
membranous +  and thinly papery +
hypogynous +  and subtending +
biconvex +  and trigonous +
Seasonally wet seeps and depressions in calcareous grasslands, meadows, open oak woods, ditches, sometimes limestone, rarely saline marsh or lakeshores +
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 spring–summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
2-fid +  and shallowly cut +
stramineous;medium brown or red brown or blackish brown +
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. acutisquamata +
Eleocharis compressa +
variety +
0.15mm;0.3mm +
depressed +  and pyramidal +
0.2mm +  and 0.35mm +
plant +  and mat-forming +