Eleocharis albida

Torrey

Ann. Lyceum Nat. Hist. New York. 3: 304. 1836.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 99. Mentioned on page 70, 97.

Plants perennial; rhizomes soft, longer internodes 2–4 cm, cortex loose, scales fugaceous, 6 mm, thinly membranous and translucent. Culms not rooting at tips, terete, 10–40 cm, soft to firm, smooth. Leaves: distal leaf-sheaths proximally brownish or sometimes reddish, distally stramineous to green. Spikelets ovoid to oblong-subcylindric, 4–12 × 2–3.5 mm, apex acute to rounded; proximal scale empty, clasping 1/2 of culm, like floral scales; subproximal 1 or 2 scales often empty; floral scales 20–100, 10 per mm of rachilla, entirely stramineous or sometimes redbrown, ovate, (1.5–) 2–2.5 × 1.5 mm, apex broadly rounded, entire. Flowers: perianth bristles (5–) 6 (–8), brown, stout, the longer equaling achene or tubercle, retrorsely spinulose; stamens 3; anthers brown, 1 mm. Achenes falling with scales, obovoid, angles keeled, 0.8–1 × 0.7–0.8 mm, apex with short neck. Tubercles whitish to brown, mammillate to pyramidal, 0.2–0.3 × 0.3–0.35 mm, 1/3 or less as wide as achene.


Phenology: Fruiting summer.
Habitat: Coastal saltmarsh edges, sloughs, beaches, dune depressions, ditches
Elevation: 0 m

Distribution

V23 145-distribution-map.jpg

Ala., Fla., Ga., La., Md., Miss., N.Mex., N.C., S.C., Tex., Mexico, Bermuda

Discussion

In most spikelets, the bright brown stigmas contrast strikingly with the stramineous floral scales. We have not seen vouchers for H. K. Svenson’s (1937) reports of Eleocharis albida from Virginia. The collections we have seen from Maryland are from the 1800s.

Selected References

None.

Lower Taxa

None.
... more about "Eleocharis albida"
pale-brown +  and blackish +
smooth +  and markedly sculptured +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.7mm;0.8mm +
1 cm10 mm <br />0.01 m <br /> (?) +
S. Galen Smith* +, Jeremy J. Bruhl* +, M. Socorro González-Elizondo* +  and Francis J. Menapace* +
Torrey +
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 +
not rooting +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
soft;firm +
0.3mm;1mm +
distally stramineous +  and green +
Ala. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.Mex. +, N.C. +, S.C. +, Tex. +, Mexico +  and Bermuda +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
redbrown +  and stramineous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +, cartilaginous +  and papery +
1.5 cm15 mm <br />0.015 m <br /> (?) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Coastal saltmarsh edges, sloughs, beaches, dune depressions, ditches +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 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 summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
stramineous;medium brown or red brown or blackish brown +
2 +, 1 +  and 1/2 +
Ann. Lyceum Nat. Hist. New York. +
ascending +  and horizontal +
caudex-like +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
adventitious +
fugaceous +
basal +  and proximal +
2-keeled +
6 cm60 mm <br />0.06 m <br /> (?) +
membranous +
cylindric +
Illustrated +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ovoid;oblong-subcylindric +
2mm;3.5mm +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
Eleocharis +
Eleocharis albida +
Eleocharis (sect. Eleocharis) ser. Albidae +
species +
whitish;brown +
0.2mm;0.3mm +
less +  and 1/3 +
mammillate +  and pyramidal +
0.3mm +  and 0.35mm +