Difference between revisions of "Eleocharis geniculata"

(Linnaeus) Roemer & Schultes

in J. J. Roemer et al., Syst. Veg. 2: 150. 1817.

Common names: Bent spikerush
Illustrated
Basionym: Scirpus geniculatus Linnaeus Sp. Pl. 1: 48. 1753
Synonyms: Eleocharis capitata R. Brown Eleocharis caribaea (Rottbøll) S. F. Blake Eleocharis dispar E. J. Hill
Treatment appears in FNA Volume 23. Treatment on page 101. Mentioned on page 63, 97, 102.
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|accepted_name=Eleocharis geniculata
 
|accepted_name=Eleocharis geniculata
|accepted_authority=(Linnaeus) Roemer & Schultes in J. J. Roemer et al.
+
|accepted_authority=(Linnaeus) Roemer & Schultes
 
|publications={{Treatment/Publication
 
|publications={{Treatment/Publication
 
|title=in J. J. Roemer et al., Syst. Veg.
 
|title=in J. J. Roemer et al., Syst. Veg.
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}}
 
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|common_names=Bent spikerush
 
|common_names=Bent spikerush
|basionyms={{Treatment/ID/Synonym
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|special_status={{Treatment/ID/Special_status
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|code=F
 +
|label=Illustrated
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}}
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|basionyms={{Treatment/ID/Basionym
 
|name=Scirpus geniculatus
 
|name=Scirpus geniculatus
 
|authority=Linnaeus
 
|authority=Linnaeus
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|rank=species
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|publication_title=Sp. Pl.
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|publication_place=1: 48. 1753
 
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}}
 
|synonyms={{Treatment/ID/Synonym
 
|synonyms={{Treatment/ID/Synonym
 
|name=Eleocharis capitata
 
|name=Eleocharis capitata
 
|authority=R. Brown
 
|authority=R. Brown
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|rank=species
 
}} {{Treatment/ID/Synonym
 
}} {{Treatment/ID/Synonym
 
|name=Eleocharis caribaea
 
|name=Eleocharis caribaea
 
|authority=(Rottbøll) S. F. Blake
 
|authority=(Rottbøll) S. F. Blake
 +
|rank=species
 
}} {{Treatment/ID/Synonym
 
}} {{Treatment/ID/Synonym
 
|name=Eleocharis dispar
 
|name=Eleocharis dispar
 
|authority=E. J. Hill
 
|authority=E. J. Hill
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|rank=species
 
}}
 
}}
 
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleogenus;Eleocharis (sect. Eleogenus) ser. Maculosae;Eleocharis geniculata
 
|hierarchy=Cyperaceae;Eleocharis;Eleocharis subg. Eleocharis;Eleocharis sect. Eleogenus;Eleocharis (sect. Eleogenus) ser. Maculosae;Eleocharis geniculata
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name=Eleocharis geniculata
 
name=Eleocharis geniculata
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|authority=(Linnaeus) Roemer & Schultes
|authority=(Linnaeus) Roemer & Schultes in J. J. Roemer et al.
 
 
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|publication title=in J. J. Roemer et al., Syst. Veg.
 
|publication title=in J. J. Roemer et al., Syst. Veg.
 
|publication year=1817
 
|publication year=1817
|special status=
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|special status=Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_151.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_151.xml
 
|genus=Eleocharis
 
|genus=Eleocharis
 
|subgenus=Eleocharis subg. Eleocharis
 
|subgenus=Eleocharis subg. Eleocharis

Latest revision as of 20:38, 5 November 2020

Plants tufted, without creeping rhizomes. Culms to 45 cm × 0.2–1 mm. Leaves: distal leaf sheaths persistent, firm, distally tightly sheathing, apex acute. Spikelets orbicular to ovoid, 1–9 × 1–4 mm, apex rounded to acute; proximal scale without flower, not amplexicaulous; floral scales to 125, 11–14 per mm of rachilla, tightly appressed, dark red-brown to stramineous, ovate to elliptic, 0.8–3 × 0.6–2(–2.3) mm, membranous to cartilaginous, apex rounded to acute. Flowers: perianth bristles (0–)4–8, typically 7, red-brown, rarely whitish, vestigial to much exceeding tubercle, typically equaling achene, spinules few to dense; styles 2-fid. Achenes brown ripening to black, biconvex, orbicular to obpyriform, 0.5–1.1 × 0.3–0.7 mm, apex rarely constricted proximal to tubercle, very finely reticulate at 40X. Tubercles stramineous to whitish, umbonate to subconic, 0.2–0.4 × 0.2–0.5 mm, apex rounded to acute. 2n = 10.


Phenology: Fruiting spring–winter (Mar–Dec).
Habitat: Brackish creeks, canal banks, dune depressions, hammocks, irrigation ditches, lakeshores, lagoons, mangrove thickets, maritime mud flats, ditches, salt marshes
Elevation: 0–1500 m

Distribution

V23 151-distribution-map.jpg

Ont., Ala., Ariz., Calif., Fla., Ga., Ill., Ind., La., Mich., Miss., Nebr., Nev., N.Mex., Ohio, Okla., Pa., Tex., Mexico, West Indies, Bermuda, Central America, South America, Asia, Africa, Pacific Islands.

Discussion

The name Eleocharis caribaea (Rottbøll) S. F. Blake is considered by most contemporary authorities to be misapplied (K. L. Wilson 1990). Eleocharis geniculata has been reported from South Carolina; I have not seen a voucher.

Selected References

None.

Lower Taxa

None.
... more about "Eleocharis geniculata"
Francis J. Menapace +
(Linnaeus) Roemer & Schultes +
Scirpus geniculatus +
Bent spikerush +
Ont. +, Ala. +, Ariz. +, Calif. +, Fla. +, Ga. +, Ill. +, Ind. +, La. +, Mich. +, Miss. +, Nebr. +, Nev. +, N.Mex. +, Ohio +, Okla. +, Pa. +, Tex. +, Mexico +, West Indies +, Bermuda +, Central America +, South America +, Asia +, Africa +  and Pacific Islands. +
0–1500 m +
Brackish creeks, canal banks, dune depressions, hammocks, irrigation ditches, lakeshores, lagoons, mangrove thickets, maritime mud flats, ditches, salt marshes +
Fruiting spring–winter (Mar–Dec). +
in J. J. Roemer et al., Syst. Veg. +
Illustrated +
Eleocharis capitata +, Eleocharis caribaea +  and Eleocharis dispar +
Eleocharis geniculata +
Eleocharis (sect. Eleogenus) ser. Maculosae +
species +