Cyperaceae taxon details
Eleocharis tenuis (Willd.) Schult.
1680593 (urn:lsid:marinespecies.org:taxname:1680593)
accepted
Species
Scirpidium tenue (Willd.) Nees · unaccepted
Scirpus tenuis Willd. · unaccepted
Trichophyllum tenue (Willd.) Farw. · unaccepted
- Variety Eleocharis tenuis var. pseudoptera (Weath. ex Svenson) Svenson
- Variety Eleocharis tenuis var. tenuis (Willd.) Schult.
- Variety Eleocharis tenuis var. verrucosa (Svenson) Svenson
- Variety Eleocharis tenuis var. atrata (Svenson) B.Boivin accepted as Eleocharis elliptica Kunth
- Variety Eleocharis tenuis var. borealis (Svenson) Gleason accepted as Eleocharis elliptica Kunth
terrestrial
Not documented
Description Plants perennial, mat-forming; rhizomes evident, 0.4–2 mm thick, soft to hard, cortex persistent, longer internodes...
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Willd.) Schult. to Schult., information provided by Alan E....
Description Plants perennial, mat-forming; rhizomes evident, 0.4–2 mm thick, soft to hard, cortex persistent, longer internodes 2–10 mm, scales persistent or decaying to fibers, 5–10 mm, papery, finely to coarsely fibrous. Culms terete or usually with 4 or 5(–6) angles, often sulcate; 5–90 cm × 0.2–0.5(–0.8) mm, firm to soft. Leaves: distal leaf sheaths persistent, not splitting, proximally dark red (or yellow-brown), distally green or stramineous or red, membranous, apex often reddish, obtuse to acute, often callose, often with tooth to 0.2(–0.9) mm. Spikelets ovoid, 3–6 × 1.5–2 mm, apex obtuse to acute; proximal scale amplexicaulous, apex entire; subproximal scale with flower; floral scales appressed in fruit, 20–60, 5–6 per mm of rachilla, medium to dark brown, midrib region often paler, ovate, 1.5–2.5 × 1 mm, apex rounded (to acute), entire, rarely shallowly notched, carinate in distal part of spikelet. Flowers: perianth bristles absent or sometimes 1–3, stramineous to pale brown, slender, to equaling achene, obscurely retrorsely spinulose; stamens 3; anthers brown, 0.8–1.8 mm; styles 3-fid. Achenes falling with or before scales, lemon yellow, dark yellow, medium brown, or green, obpyriform, trigonous, angles evident, sometimes prominent, 0.6–0.9 × 0.45–0.7 mm, finely to coarsely rugulose and usually alveolate (cancellate) at 10–20X, 6–10(–14) sharp horizontal ridges in each vertical series. Tubercles brown, pyramidal and to as high as wide to greatly depressed-apiculate, often rudimentary, 0.05–0.3 × 0.25–0.4 mm. [details]
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Willd.) Schult. to Schult., information provided by Alan E....
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Willd.) Schult. to Schult., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis tenuis (Willd.) Schult.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680593 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 perennial, mat-forming; rhizomes evident, 0.4–2 mm thick, soft to hard, cortex persistent, longer internodes 2–10 mm, scales persistent or decaying to fibers, 5–10 mm, papery, finely to coarsely fibrous. Culms terete or usually with 4 or 5(–6) angles, often sulcate; 5–90 cm × 0.2–0.5(–0.8) mm, firm to soft. Leaves: distal leaf sheaths persistent, not splitting, proximally dark red (or yellow-brown), distally green or stramineous or red, membranous, apex often reddish, obtuse to acute, often callose, often with tooth to 0.2(–0.9) mm. Spikelets ovoid, 3–6 × 1.5–2 mm, apex obtuse to acute; proximal scale amplexicaulous, apex entire; subproximal scale with flower; floral scales appressed in fruit, 20–60, 5–6 per mm of rachilla, medium to dark brown, midrib region often paler, ovate, 1.5–2.5 × 1 mm, apex rounded (to acute), entire, rarely shallowly notched, carinate in distal part of spikelet. Flowers: perianth bristles absent or sometimes 1–3, stramineous to pale brown, slender, to equaling achene, obscurely retrorsely spinulose; stamens 3; anthers brown, 0.8–1.8 mm; styles 3-fid. Achenes falling with or before scales, lemon yellow, dark yellow, medium brown, or green, obpyriform, trigonous, angles evident, sometimes prominent, 0.6–0.9 × 0.45–0.7 mm, finely to coarsely rugulose and usually alveolate (cancellate) at 10–20X, 6–10(–14) sharp horizontal ridges in each vertical series. Tubercles brown, pyramidal and to as high as wide to greatly depressed-apiculate, often rudimentary, 0.05–0.3 × 0.25–0.4 mm. [details]Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Willd.) Schult. to Schult., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List [details]
To Biodiversity Heritage Library (2 publications) (from synonym Trichophyllum tenue (Willd.) Farw.)
To Biodiversity Heritage Library (3 publications) (from synonym Scirpidium tenue (Willd.) Nees)
To Biodiversity Heritage Library (300 publications)
To Biodiversity Heritage Library (99 publications) (from synonym Scirpus tenuis Willd.)
To European Nucleotide Archive, ENA (Eleocharis tenuis)
To GenBank (17 nucleotides; 12 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpidium tenue (Willd.) Nees)
To International Plant Names Index (IPNI) (from synonym Scirpus tenuis Willd.)
To International Plant Names Index (IPNI) (from synonym Trichophyllum tenue (Willd.) Farw.)
To Plants of the World Online (from synonym Trichophyllum tenue (Willd.) Farw.)
To Plants of the World Online
To Plants of the World Online (from synonym Scirpidium tenue (Willd.) Nees)
To Plants of the World Online (from synonym Scirpus tenuis Willd.)
To Biodiversity Heritage Library (3 publications) (from synonym Scirpidium tenue (Willd.) Nees)
To Biodiversity Heritage Library (300 publications)
To Biodiversity Heritage Library (99 publications) (from synonym Scirpus tenuis Willd.)
To European Nucleotide Archive, ENA (Eleocharis tenuis)
To GenBank (17 nucleotides; 12 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpidium tenue (Willd.) Nees)
To International Plant Names Index (IPNI) (from synonym Scirpus tenuis Willd.)
To International Plant Names Index (IPNI) (from synonym Trichophyllum tenue (Willd.) Farw.)
To Plants of the World Online (from synonym Trichophyllum tenue (Willd.) Farw.)
To Plants of the World Online
To Plants of the World Online (from synonym Scirpidium tenue (Willd.) Nees)
To Plants of the World Online (from synonym Scirpus tenuis Willd.)
