Eleocharis (sect. Eleogenus) ser. Maculosae

Svenson

Rhodora 31: 128. 1929.

Treatment appears in FNA Volume 23.

Plants annual or perennial, rhizomatous or not. Leaves: distal leaf-sheaths without a tooth. Achenes prominent, apex often constricted proximal to tubercle. Tubercles not dorsiventrally compressed, similar in cross-section to achene.

Distribution

Tropical to temperate latitudes worldwide, primarily neotropical

Discussion

Species ca. 12 (3 in the flora).

Selected References

None.

trigonous;rarely;biconvex +
constricted +
Francis J. Menapace +
Svenson +
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 +
0 cm0 mm <br />0 m <br /> (90 cm900 mm <br />0.9 m <br />) +
Tropical to temperate latitudes worldwide +  and primarily neotropical +
hypogynous +  and subtending +
biconvex +  and trigonous +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
stramineous;medium brown or red brown or blackish brown +
ascending +  and horizontal +
caudex-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
adventitious +
basal +  and proximal +
2-keeled +
cylindric +
0 cm0 mm <br />0 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
with 0-1/2-3-fid +  and 2-fid +
Eleocharis +
Eleocharis (sect. Eleogenus) ser. Maculosae +
Eleocharis sect. Eleogenus +
compressed +
not +  and rhizomatous +
perennial +  and annual +