Cyperaceae taxon details
Eleocharis brittonii Svenson ex Small
1681034 (urn:lsid:marinespecies.org:taxname:1681034)
accepted
Species
terrestrial
Not documented
Description Plants usually annual, tufted, often stoloniferous; rhizomes absent. Culms ascending, quadrangular, sulcate (not sulcate in...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Man. S.E. Fl. 164 1933 to Man. S.E. Fl. : 164 (1933), information...
Description Plants usually annual, tufted, often stoloniferous; rhizomes absent. Culms ascending, quadrangular, sulcate (not sulcate in Eleocharis sp. aff. brittonii), 7–37 cm × 0.2–0.6 mm, soft to firm. Leaves: distal leaf sheaths persistent or fugaceous, pale brown or green, sometimes streaked red-brown, membranous to translucent, apex acute to acuminate. Spikelets: basal spikelets absent; often proliferous, ellipsoid to ovoid, terete, 2–10.5 × 1–2.8 mm, apex acute; proximal scale empty, persistent, amplexicaulous, dissimilar to floral scales, slightly longer, often resembling an involucral bract, elliptic or lanceolate, 1.4–2.7 × 0.8–1.2 mm, apex rounded, midrib markedly thickened and broad; subproximal scale with a flower; floral scales spiraled, 13–76, 9–13 per mm of rachilla, colorless or pale brown, streaked or mottled pale brown to red-brown, midribs sometimes green, ovate, elliptic, or obovate, 0.8–2.2 × 0.5–1 mm, papery or membranous, midrib evident to prominent, apex rounded. Flowers: perianth bristles 5–6 or absent, appressed to achene, white, vestigial to shorter than achene, to 0.3 mm; spinules not evident at 45X; stamens 2–3; anthers 0.2–0.45 mm; styles 3-fid. Achenes grayish to pale olive or yellowish, often minutely brown-spotted, obovoid, trigonous, angles prominent, 0.45–0.8 × 0.3–0.55 mm, apex constricted proximal to tubercle, smooth or finely pitted at 30X. Tubercles gray, green, or yellowish, birettaform, trigonous, 0.05–0.1 × 0.15–0.3 mm. 2n = 10. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Man. S.E. Fl. 164 1933 to Man. S.E. Fl. : 164 (1933), information...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Man. S.E. Fl. 164 1933 to Man. S.E. Fl. : 164 (1933), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis brittonii Svenson ex Small. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681034 on 2025-09-12
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Nomenclature
basis of record
Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Plants usually annual, tufted, often stoloniferous; rhizomes absent. Culms ascending, quadrangular, sulcate (not sulcate in Eleocharis sp. aff. brittonii), 7–37 cm × 0.2–0.6 mm, soft to firm. Leaves: distal leaf sheaths persistent or fugaceous, pale brown or green, sometimes streaked red-brown, membranous to translucent, apex acute to acuminate. Spikelets: basal spikelets absent; often proliferous, ellipsoid to ovoid, terete, 2–10.5 × 1–2.8 mm, apex acute; proximal scale empty, persistent, amplexicaulous, dissimilar to floral scales, slightly longer, often resembling an involucral bract, elliptic or lanceolate, 1.4–2.7 × 0.8–1.2 mm, apex rounded, midrib markedly thickened and broad; subproximal scale with a flower; floral scales spiraled, 13–76, 9–13 per mm of rachilla, colorless or pale brown, streaked or mottled pale brown to red-brown, midribs sometimes green, ovate, elliptic, or obovate, 0.8–2.2 × 0.5–1 mm, papery or membranous, midrib evident to prominent, apex rounded. Flowers: perianth bristles 5–6 or absent, appressed to achene, white, vestigial to shorter than achene, to 0.3 mm; spinules not evident at 45X; stamens 2–3; anthers 0.2–0.45 mm; styles 3-fid. Achenes grayish to pale olive or yellowish, often minutely brown-spotted, obovoid, trigonous, angles prominent, 0.45–0.8 × 0.3–0.55 mm, apex constricted proximal to tubercle, smooth or finely pitted at 30X. Tubercles gray, green, or yellowish, birettaform, trigonous, 0.05–0.1 × 0.15–0.3 mm. 2n = 10. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Man. S.E. Fl. 164 1933 to Man. S.E. Fl. : 164 (1933), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (3 publications)
To European Nucleotide Archive, ENA (Eleocharis brittonii)
To GenBank (5 nucleotides; 4 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Eleocharis microcarpa var. brittonii (Svenson ex Small) Svenson)
To New York Botanical Garden Steere Herbarium (Eleocharis_brittonii_NY51060_type_1)
To Plants of the World Online (from synonym Eleocharis microcarpa var. brittonii (Svenson ex Small) Svenson)
To Plants of the World Online
To European Nucleotide Archive, ENA (Eleocharis brittonii)
To GenBank (5 nucleotides; 4 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Eleocharis microcarpa var. brittonii (Svenson ex Small) Svenson)
To New York Botanical Garden Steere Herbarium (Eleocharis_brittonii_NY51060_type_1)
To Plants of the World Online (from synonym Eleocharis microcarpa var. brittonii (Svenson ex Small) Svenson)
To Plants of the World Online
From editor or global species database
Hosted externally
