Eleocharis radicans

(Poiret) Kunth

Enum. Pl. 2: 142. 1837.

Illustrated
Basionyms: Scirpus radicans Poiret in J. Lamarck et al., Encycl. 6: 751. 1804
Synonyms: Eleocharis acicularis var. radicans (Poiret) Britton Eleocharis lindheimeri Svenson
Treatment appears in FNA Volume 23. Treatment on page 112. Mentioned on page 108.

Plants perennial, mat-forming; rhizomes 0.2–0.5 mm thick, longer internodes 5–10 mm, scales not evident. Culms obscurely to ca. 10-ribbed when dry, terete, 1–12 cm × 0.4–1 mm, very soft, spongy. Leaves: distal leaf-sheaths fugaceous, colorless, translucent, apex blunt. Spikelets ovoid, 2–3 × 1–1.5 mm, apex acute; scales 5–15, 5–7 per mm of rachilla, colorless to stramineous, rarely slightly reddish, medially broadly greenish to colorless, faintly 3–5-veined, often ovate, membranous, fleshy; proximal scale 2–2.5 × 0.7 mm, other scales 1.5–2 × 0.7 mm, midrib obscure to slightly keeled, apex acute to rounded. Flowers: perianth bristles equaling achene; anthers yellow to brown, 0.3–0.5 mm. Achenes brownish, angles plus longitudinal ridges ca. 7, narrowly obovoid, 2 times longer than wide, 0.75–0.9 × 0.35–0.4 mm, trabeculae ca. 50, distinct. Tubercles brown, pyramidal, 0.15 × 0.15–0.2 mm.


Phenology: Fruiting spring–winter (Apr–Dec).
Habitat: Stream alluvium, lake margins, meadows, seeps, bogs
Elevation: 100–1400 Ariz., Calif., Fla., La., Mich., Okla., Tex., Va.

Distribution

V23 170-distribution-map.jpg

n Mexico, West Indies, Central America (El Salvador), South America (Argentina), South America (Chile), Pacific Islands (Hawaii)

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Eleocharis radicans"
trigonous;nearly terete +
yellow;brown +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
S. Galen Smith* +, Jeremy J. Bruhl* +, M. Socorro González-Elizondo* +  and Francis J. Menapace* +
(Poiret) Kunth +
flattened +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
shortened +
persistent +
enlarged +
Scirpus radicans +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.4mm;1mm +
n Mexico +, West Indies +, Central America (El Salvador) +, South America (Argentina) +, South America (Chile) +  and Pacific Islands (Hawaii) +
100–1400 Ariz., Calif., Fla., La., Mich., Okla., Tex., Va. +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
subtending +
biconvex +  and trigonous +
Stream alluvium, lake margins, meadows, seeps, bogs +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
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 +
Fruiting spring–winter (Apr–Dec). +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
stramineous;medium brown or red brown or blackish brown +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (?) +
ascending +  and horizontal +
caudex-like +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.75mm;0.9mm +
obovoid +
0.35mm;0.4mm +
adventitious +
colorless +  and stramineous rarely slightly reddish medially broadly greenish +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
basal +  and proximal +
not evident +
fleshy +  and membranous +
cylindric +
Illustrated +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
proliferating +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1mm;1.5mm +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
Eleocharis acicularis var. radicans +  and Eleocharis lindheimeri +
Eleocharis radicans +
Eleocharis subg. Scirpidium +
species +
pyramidal +
0.15mm +  and 0.2mm +
0 +  and 10 +
stoloniferous +  and rhizomatous +
plant +  and mat-forming +