Difference between revisions of "Eleocharis melanocarpa"
Ann. Lyceum Nat. Hist. New York 3: 311. 1836.
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|common_names=Black-fruited spike-rush | |common_names=Black-fruited spike-rush | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
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| + | |code=E | ||
| + | |label=Endemic | ||
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name=Eleocharis melanocarpa | name=Eleocharis melanocarpa | ||
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|authority=Torrey | |authority=Torrey | ||
|rank=species | |rank=species | ||
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|publication title=Ann. Lyceum Nat. Hist. New York | |publication title=Ann. Lyceum Nat. Hist. New York | ||
|publication year=1836 | |publication year=1836 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_125.xml |
|genus=Eleocharis | |genus=Eleocharis | ||
|subgenus=Eleocharis subg. Eleocharis | |subgenus=Eleocharis subg. Eleocharis | ||
Latest revision as of 20:38, 5 November 2020
Culms to 2 times wider than thick, 35–60(–70) cm × 0.5–1.3 mm, hard, usually with to 10 blunt ribs, at 20X often finely ridged and minutely granular. Leaves: distal leaf sheaths brown to reddish. Spikelets 3–12 × 3–4 mm; proximal scale amplexicaulous, 3.5–4 mm, midrib region very broad and fleshy, apex entire; subproximal scale with a flower; floral scales 30–40, 8–10 per mm of rachilla, orange-brown to stramineous, midrib region stramineous, broadly ovate, papery or sometimes membranous, 3–4 × 2 mm, apex entire, rounded. Flowers: perianth bristles present, sometimes rudimentary, brown, length variable, obscurely retrorsely spinulose; anthers brown, 1.7–2.2 mm. Achenes subdeltoid in outline, sometimes broadly obpyriform, equilaterally trigonous, angles prominent, 0.9–1.2 × 0.7–1.1 mm, apex truncate. Tubercles sessile, depressed-pyramidal, often apiculate, as wide as achene, 0.3–0.5 × 0.7–1.1 mm.
Phenology: Fruiting summer.
Habitat: Fresh, oligotrophic, acid, sandy or peaty, often drying shores, ponds, ditches
Elevation: 10–300 m
Distribution
Ala., Fla., Ga., Ind., Mass., Mich., N.Y., N.C., R.I., S.C., Tex., Va.
Discussion
Eleocharis melanocarpa is reported from Rhode Island; I have not seen a voucher specimen.
Selected References
None.