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Cyperaceae taxon details

Eleocharis montana (Kunth) Roem. & Schult.

1680492  (urn:lsid:marinespecies.org:taxname:1680492)

accepted
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terrestrial
Not documented
Description Plants perennial, densely tufted or mat-forming; rhizomes mostly hidden by culms and roots, fairly long, 3 mm thick, hard,...  
Description Plants perennial, densely tufted or mat-forming; rhizomes mostly hidden by culms and roots, fairly long, 3 mm thick, hard, cortex persistent, longer internodes to 3 mm, scales persistent, ca. 8 mm, membranous, slightly fibrous. Culms terete, when dry with few to many blunt ridges, 10–70 cm × 0.5–2 mm, soft to firm, internally hollow with complete transverse septa 2–5 mm apart, usually evident externally except in narrowest culms. Leaves: distal leaf sheaths persistent, not splitting, proximally dark red, distally green or brown, slightly callose, papery, apex obtuse, tooth present, 0.3–1 mm. Spikelets ovoid, 6–21 × 3–4 mm, apex acute to obtuse; proximal scale amplexicaulous, entire; subproximal scale empty or with flower; floral scales appressed in fruit, 100–500+, (15–)30–40 per mm of rachilla, medium brown to colorless, midrib regions greenish to colorless, ovate, 1.5–2.5 × 1–1.5 mm, entire, apex rounded to subacute, carinate in distal part of spikelet. Flowers: perianth bristles 6–8, pale brown, medium stout, from less than 1/2 achene length to sometimes slightly exceeding tubercle, retrorsely spinulose; stamens 1; anthers dark yellow to brown, 0.6–1 mm; styles 3-fid or some 2-fid. Achenes falling with scales, dark green or medium brown, obovoid to obpyriform, biconvex or sometimes some compressed trigonous in same spikelet, lateral angles prominent, abaxial angle absent or evident, not prominent, 0.8–1.1 × 0.7–0.8 mm, neck short or absent, finely cancellate at 10–20X, sometimes finely rugulose, with 15 horizontal ridges in vertical series. Tubercles brown, pyramidal, mostly depressed, 0.2–0.35 × 0.2–0.4 mm. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Kunth) Roem. & Schult. to Roem. & Schult., information...  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Kunth) Roem. & Schult. to Roem. & Schult., information provided by Alan E. on email Oct. 12 2020 More details could be found in  [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis montana (Kunth) Roem. & Schult.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680492 on 2025-09-12
Date
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2023-09-06 07:35:01Z
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2024-12-10 11:47:54Z
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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 tufted or mat-forming; rhizomes mostly hidden by culms and roots, fairly long, 3 mm thick, hard, cortex persistent, longer internodes to 3 mm, scales persistent, ca. 8 mm, membranous, slightly fibrous. Culms terete, when dry with few to many blunt ridges, 10–70 cm × 0.5–2 mm, soft to firm, internally hollow with complete transverse septa 2–5 mm apart, usually evident externally except in narrowest culms. Leaves: distal leaf sheaths persistent, not splitting, proximally dark red, distally green or brown, slightly callose, papery, apex obtuse, tooth present, 0.3–1 mm. Spikelets ovoid, 6–21 × 3–4 mm, apex acute to obtuse; proximal scale amplexicaulous, entire; subproximal scale empty or with flower; floral scales appressed in fruit, 100–500+, (15–)30–40 per mm of rachilla, medium brown to colorless, midrib regions greenish to colorless, ovate, 1.5–2.5 × 1–1.5 mm, entire, apex rounded to subacute, carinate in distal part of spikelet. Flowers: perianth bristles 6–8, pale brown, medium stout, from less than 1/2 achene length to sometimes slightly exceeding tubercle, retrorsely spinulose; stamens 1; anthers dark yellow to brown, 0.6–1 mm; styles 3-fid or some 2-fid. Achenes falling with scales, dark green or medium brown, obovoid to obpyriform, biconvex or sometimes some compressed trigonous in same spikelet, lateral angles prominent, abaxial angle absent or evident, not prominent, 0.8–1.1 × 0.7–0.8 mm, neck short or absent, finely cancellate at 10–20X, sometimes finely rugulose, with 15 horizontal ridges in vertical series. Tubercles brown, pyramidal, mostly depressed, 0.2–0.35 × 0.2–0.4 mm. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Kunth) Roem. & Schult. to Roem. & Schult., information provided by Alan E. on email Oct. 12 2020 More details could be found in  [details]