Cyperaceae taxon details
Eleocharis bifida S.G.Sm.
1681024 (urn:lsid:marinespecies.org:taxname:1681024)
accepted
Species
terrestrial
Not documented
Description Plants perennial, densely cespitose; rhizomes concealed by persistent culm bases, short, 4–5 mm thick, hard, cortex...
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Novon 11: 243 2001 to Novon 11(2): 243. 2001 , information provided...
Description Plants perennial, densely cespitose; rhizomes concealed by persistent culm bases, short, 4–5 mm thick, hard, cortex persistent, internodes crowded, scales decaying to coarse fibers, 1 cm, papery. Culms greatly compressed, 4–10 times wider than thick, often with 1 or 2 sharp ridges on 1 side, (8–)20–35 cm × 0.7–2.3 mm, hard, finely striate, spongy. Leaves: distal leaf sheaths persistent, not splitting, proximally red or stramineous, distally green to stramineous, inflated, papery, apex dark brown, broadly obtuse to subtruncate, callose, tooth absent. Spikelets ovoid, 4–9 × 2.5–4 mm, apex acute; proximal scale clasping 2/3–3/4 of culm, apex 2-fid; subproximal scale empty or with a flower; floral scales spreading in fruit, 30–60, 6–9 per mm of rachilla, medium or pale brown, midrib region often paler, ovate-lanceolate, 2.5–3.5 × 1.5 mm, apex 2-fid, carinate in distal part of spikelet. Flowers: perianth bristles 0(–5), stramineous to pale brown, 1/2 of to equaling achene length; stamens 3; anthers orange-brown, 0.7–1.5 mm; styles 3-fid. Achenes falling with scales, yellow-brown to medium brown, obovoid to obpyriform, nearly equilaterally trigonous, cross section circular to slightly compressed, angles obscure or evident, 0.9–1.1 × 0.6–0.75, neck usually very short, finely rugulose at 10–30X, 20 or more low, blunt horizontal ridges in vertical series. Tubercles brown, depressed-pyramidal, often rudimentary, 0.1–0.25 × 0.2–0.3 mm. [details]
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Novon 11: 243 2001 to Novon 11(2): 243. 2001 , information provided...
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Novon 11: 243 2001 to Novon 11(2): 243. 2001 , information provided by Alan E. on email Oct. 12 2020 More details could be found in The P [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis bifida S.G.Sm.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681024 on 2025-09-12
The webpage text is licensed under a Creative Commons
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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, densely cespitose; rhizomes concealed by persistent culm bases, short, 4–5 mm thick, hard, cortex persistent, internodes crowded, scales decaying to coarse fibers, 1 cm, papery. Culms greatly compressed, 4–10 times wider than thick, often with 1 or 2 sharp ridges on 1 side, (8–)20–35 cm × 0.7–2.3 mm, hard, finely striate, spongy. Leaves: distal leaf sheaths persistent, not splitting, proximally red or stramineous, distally green to stramineous, inflated, papery, apex dark brown, broadly obtuse to subtruncate, callose, tooth absent. Spikelets ovoid, 4–9 × 2.5–4 mm, apex acute; proximal scale clasping 2/3–3/4 of culm, apex 2-fid; subproximal scale empty or with a flower; floral scales spreading in fruit, 30–60, 6–9 per mm of rachilla, medium or pale brown, midrib region often paler, ovate-lanceolate, 2.5–3.5 × 1.5 mm, apex 2-fid, carinate in distal part of spikelet. Flowers: perianth bristles 0(–5), stramineous to pale brown, 1/2 of to equaling achene length; stamens 3; anthers orange-brown, 0.7–1.5 mm; styles 3-fid. Achenes falling with scales, yellow-brown to medium brown, obovoid to obpyriform, nearly equilaterally trigonous, cross section circular to slightly compressed, angles obscure or evident, 0.9–1.1 × 0.6–0.75, neck usually very short, finely rugulose at 10–30X, 20 or more low, blunt horizontal ridges in vertical series. Tubercles brown, depressed-pyramidal, often rudimentary, 0.1–0.25 × 0.2–0.3 mm. [details]Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Novon 11: 243 2001 to Novon 11(2): 243. 2001 , information provided by Alan E. on email Oct. 12 2020 More details could be found in The P [details]
