Cyperaceae taxon details
Eleocharis elongata Chapm.
1681078 (urn:lsid:marinespecies.org:taxname:1681078)
accepted
Species
Trichophyllum elongatum (Chapm.) House · unaccepted
terrestrial
Not documented
Description Plants perennial; rhizomes 1–1.5 mm thick, soft, longer internodes 2–3 cm, scales 5–14 mm, tubers absent. Culms...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 515 1860 to Fl. South. U.S. : 515 (1860), information...
Description Plants perennial; rhizomes 1–1.5 mm thick, soft, longer internodes 2–3 cm, scales 5–14 mm, tubers absent. Culms obscurely trigonous to terete; spikelet-bearing culms 16–80 cm × 0.5–1.5 mm; when submersed plants often forming numerous, filiform flaccid culms without spikelets, sometimes with whorls of slender branches, 0.1–0.3 mm wide, soft; sometimes septate-nodulose when aquatic, internally spongy, transverse septa incomplete. Leaves: distal leaf sheaths persistent or decaying, membranous, apex acute, often prolonged into translucent portion to 1 mm. Spikelets not proliferous, (6–)9–24 × 1.4–2.2 mm; rachilla joints bearing prominent winglike remnants of floral scales; proximal scale with a flower, amplexicaulous, 2.5–4.1 mm; floral scales 7–26, 1–2 per mm of rachilla, green to stramineous or pale brown, often minutely dotted reddish, usually with conspicuous dark brown to blackish submarginal band, narrowly ovate, 3.5–4.5 × 2 mm, thickly papery, membranous toward margins. Flowers: perianth bristles 6–7, whitish to stramineous or pale reddish brown, proximally slightly flattened, unequal, exceeding or rarely shorter than achene, 0.7–1.9 mm, retrorsely spinulose; anthers yellow to reddish, 1.7–1.9 mm; styles 3-fid. Achenes whitish, stramineous, or pale green, obovoid to obpyriform, compressed trigonous with adaxial face broadest, or biconvex, 0.65–1.4 × 0.5–0.8 mm, clearly sculptured at 10–15X, each face with 10–13 rows of rectangular, transversely elongated cells, apex constricted to short neck 0.2–0.25(–0.3) mm wide, wider at tubercle base. Tubercles dark brown, pyramidal, 0.2–0.5 × 0.2–0.4 mm. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 515 1860 to Fl. South. U.S. : 515 (1860), information...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 515 1860 to Fl. South. U.S. : 515 (1860), 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 elongata Chapm.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681078 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; rhizomes 1–1.5 mm thick, soft, longer internodes 2–3 cm, scales 5–14 mm, tubers absent. Culms obscurely trigonous to terete; spikelet-bearing culms 16–80 cm × 0.5–1.5 mm; when submersed plants often forming numerous, filiform flaccid culms without spikelets, sometimes with whorls of slender branches, 0.1–0.3 mm wide, soft; sometimes septate-nodulose when aquatic, internally spongy, transverse septa incomplete. Leaves: distal leaf sheaths persistent or decaying, membranous, apex acute, often prolonged into translucent portion to 1 mm. Spikelets not proliferous, (6–)9–24 × 1.4–2.2 mm; rachilla joints bearing prominent winglike remnants of floral scales; proximal scale with a flower, amplexicaulous, 2.5–4.1 mm; floral scales 7–26, 1–2 per mm of rachilla, green to stramineous or pale brown, often minutely dotted reddish, usually with conspicuous dark brown to blackish submarginal band, narrowly ovate, 3.5–4.5 × 2 mm, thickly papery, membranous toward margins. Flowers: perianth bristles 6–7, whitish to stramineous or pale reddish brown, proximally slightly flattened, unequal, exceeding or rarely shorter than achene, 0.7–1.9 mm, retrorsely spinulose; anthers yellow to reddish, 1.7–1.9 mm; styles 3-fid. Achenes whitish, stramineous, or pale green, obovoid to obpyriform, compressed trigonous with adaxial face broadest, or biconvex, 0.65–1.4 × 0.5–0.8 mm, clearly sculptured at 10–15X, each face with 10–13 rows of rectangular, transversely elongated cells, apex constricted to short neck 0.2–0.25(–0.3) mm wide, wider at tubercle base. Tubercles dark brown, pyramidal, 0.2–0.5 × 0.2–0.4 mm. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 515 1860 to Fl. South. U.S. : 515 (1860), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (36 publications)
To European Nucleotide Archive, ENA (Eleocharis elongata)
To GenBank (3 nucleotides; 2 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Trichophyllum elongatum (Chapm.) House)
To New York Botanical Garden Steere Herbarium (Eleocharis_elongata_NY51025_type_1)
To Plants of the World Online (from synonym Trichophyllum elongatum (Chapm.) House)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis elongata K000433899 type 1)
To European Nucleotide Archive, ENA (Eleocharis elongata)
To GenBank (3 nucleotides; 2 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Trichophyllum elongatum (Chapm.) House)
To New York Botanical Garden Steere Herbarium (Eleocharis_elongata_NY51025_type_1)
To Plants of the World Online (from synonym Trichophyllum elongatum (Chapm.) House)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis elongata K000433899 type 1)
From editor or global species database
Hosted externally
Hosted externally
