Cyperaceae taxon details
Eleocharis tricostata Torr.
1680598 (urn:lsid:marinespecies.org:taxname:1680598)
accepted
Species
Scirpus tricostatus (Torr.) Kuntze · unaccepted
Trichophyllum tricostatum (Torr.) House · unaccepted
terrestrial
Not documented
Description Plants perennial, mat-forming; rhizomes evident, fairly long, 1.5–3 mm thick, hard, cortex persistent, longer internodes...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 310 1836 to Ann. Lyceum Nat. Hist....
Description Plants perennial, mat-forming; rhizomes evident, fairly long, 1.5–3 mm thick, hard, cortex persistent, longer internodes 1.5–3 mm, scales disintegrating to fibers, 4–5 mm, papery. Culms terete, often with 8–12 blunt ridges when dry, 20–55 cm × 0.3–1.3 mm, soft to hard. Leaves: distal leaf sheaths persistent, rarely splitting, proximally red to stramineous, distally green to reddish, papery, apex often dark reddish, subtruncate to obtuse, not callose, tooth present on some or all culms of plant, to 0.5 mm. Spikelets cylindric to ovoid, 5–20 × 2–3 mm, apex rounded to subacute; proximal scale amplexicaulous, apex entire; subproximal scale empty; floral scales appressed in fruit, 20–200+, 10 per mm of rachilla, dark brown, midrib regions often stramineous or greenish, oblong, 1.7–2.5 × 1 mm, apex entire, broadly rounded, usually recurved, mostly carinate. Flowers: perianth bristles absent; stamens 3; anthers dark yellow, 1–1.5 mm; styles 3-fid. Achenes falling with scales, medium to dark brown, obovoid to obpyriform, with short neck, thickly trigonous, angles prominent (keeled), 0.7–0.9 × 0.4–0.6 mm, obscurely to clearly rugulose at 10–20X with more than 20 horizontal ridges in vertical series and/or minutely cancellate at 20–30X. Tubercles brown, rudimentary, mostly apiculate, sometimes pyramidal, 0.05–0.15 × 0.15–0.2 mm. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 310 1836 to Ann. Lyceum Nat. Hist....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 310 1836 to Ann. Lyceum Nat. Hist. New York 3: 310 (1836), 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 tricostata Torr.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680598 on 2025-09-12
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
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, fairly long, 1.5–3 mm thick, hard, cortex persistent, longer internodes 1.5–3 mm, scales disintegrating to fibers, 4–5 mm, papery. Culms terete, often with 8–12 blunt ridges when dry, 20–55 cm × 0.3–1.3 mm, soft to hard. Leaves: distal leaf sheaths persistent, rarely splitting, proximally red to stramineous, distally green to reddish, papery, apex often dark reddish, subtruncate to obtuse, not callose, tooth present on some or all culms of plant, to 0.5 mm. Spikelets cylindric to ovoid, 5–20 × 2–3 mm, apex rounded to subacute; proximal scale amplexicaulous, apex entire; subproximal scale empty; floral scales appressed in fruit, 20–200+, 10 per mm of rachilla, dark brown, midrib regions often stramineous or greenish, oblong, 1.7–2.5 × 1 mm, apex entire, broadly rounded, usually recurved, mostly carinate. Flowers: perianth bristles absent; stamens 3; anthers dark yellow, 1–1.5 mm; styles 3-fid. Achenes falling with scales, medium to dark brown, obovoid to obpyriform, with short neck, thickly trigonous, angles prominent (keeled), 0.7–0.9 × 0.4–0.6 mm, obscurely to clearly rugulose at 10–20X with more than 20 horizontal ridges in vertical series and/or minutely cancellate at 20–30X. Tubercles brown, rudimentary, mostly apiculate, sometimes pyramidal, 0.05–0.15 × 0.15–0.2 mm. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 310 1836 to Ann. Lyceum Nat. Hist. New York 3: 310 (1836), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Scirpus tricostatus (Torr.) Kuntze)
To Biodiversity Heritage Library (83 publications)
To European Nucleotide Archive, ENA (Eleocharis tricostata)
To GenBank (3 nucleotides; 2 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpus tricostatus (Torr.) Kuntze)
To International Plant Names Index (IPNI) (from synonym Trichophyllum tricostatum (Torr.) House)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51066_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51067_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51068_type_1)
To Plants of the World Online (from synonym Scirpus tricostatus (Torr.) Kuntze)
To Plants of the World Online
To Plants of the World Online (from synonym Trichophyllum tricostatum (Torr.) House)
To Biodiversity Heritage Library (83 publications)
To European Nucleotide Archive, ENA (Eleocharis tricostata)
To GenBank (3 nucleotides; 2 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpus tricostatus (Torr.) Kuntze)
To International Plant Names Index (IPNI) (from synonym Trichophyllum tricostatum (Torr.) House)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51066_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51067_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_tricostata_NY51068_type_1)
To Plants of the World Online (from synonym Scirpus tricostatus (Torr.) Kuntze)
To Plants of the World Online
To Plants of the World Online (from synonym Trichophyllum tricostatum (Torr.) House)
From editor or global species database
Hosted externally
Hosted externally
Hosted externally
