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Cyperaceae taxon details

Eleocharis uniglumis (Link) Schult.

To the Natural History Museum, London (Eleocharis uniglumis (Link) Schult. BM001066942 type 1)
To the Natural History Museum, London (Eleocharis uniglumis (Link) Schult. BM001066942 type 1)

577518  (urn:lsid:marinespecies.org:taxname:577518)

  1. Biota
  2. Plantae (Kingdom)
  3. Viridiplantae (Subkingdom)
  4. Streptophyta (Infrakingdom)
  5. Tracheophyta (Phylum (Division))
  6. Spermatophytina (Subphylum (Subdivision))
  7. Magnoliopsida (Class)
  8. Lilianae (Superorder)
  9. Poales (Order)
  10. Cyperaceae (Family)
  11. Eleocharideae (Tribe)
  12. Eleocharis (Genus)
  13. Eleocharis uniglumis (Species)
accepted
Species

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  1. Subspecies Eleocharis uniglumis subsp. septentrionalis (Zinserl.) T.V.Egorova
  2. Subspecies Eleocharis uniglumis subsp. sterneri Strandh.
  3. Subspecies Eleocharis uniglumis subsp. uniglumis
  4. Subspecies Eleocharis uniglumis subsp. fennica (Palla ex Kneuck.) Vestergr. accepted as Eleocharis fennica Palla ex Kneuck.
  5. Subspecies Eleocharis uniglumis subsp. fennica (Palla) T.V.Egorova accepted as Eleocharis fennica Palla ex Kneuck.
  6. Subspecies Eleocharis uniglumis subsp. watsonii (Bab.) K.Richt. accepted as Eleocharis uniglumis subsp. uniglumis
  7. Variety Eleocharis uniglumis var. affinis (C.A.Mey. ex Claus) Nyman accepted as Eleocharis uniglumis subsp. uniglumis
  8. Variety Eleocharis uniglumis var. fennica (Palla ex Kneuck.) Holmb. accepted as Eleocharis fennica Palla ex Kneuck.
  9. Variety Eleocharis uniglumis var. halophila Fernald & Brackett accepted as Eleocharis uniglumis subsp. uniglumis
  10. Variety Eleocharis uniglumis var. latior T.Koyama accepted as Eleocharis uniglumis subsp. uniglumis
  11. Variety Eleocharis uniglumis var. pallida Podp. accepted as Eleocharis uniglumis subsp. uniglumis
  12. Variety Eleocharis uniglumis var. transcaucasica (Zinserl.) T.Koyama accepted as Eleocharis uniglumis subsp. uniglumis
  13. Variety Eleocharis uniglumis var. typica Fernald & Brackett accepted as Eleocharis uniglumis (Link) Schult.
  14. Variety Eleocharis uniglumis var. vestergrenii Hyl. accepted as Eleocharis uniglumis subsp. uniglumis
  15. Variety Eleocharis uniglumis var. watsonii (Bab.) Nyman accepted as Eleocharis uniglumis subsp. uniglumis
brackish, terrestrial
(of Scirpus uniglumis Link) (1820). <em>Jahrbücher der Gewächskunde.</em> 1.
page(s): 77 [details] 
Description Rhizomes creeping, dark purplish. Stems up to 60 cm × 0.8–1.5(–1.9) mm, tufted, ± terete, smooth to indistinctly...  
Description Rhizomes creeping, dark purplish. Stems up to 60 cm × 0.8–1.5(–1.9) mm, tufted, ± terete, smooth to indistinctly ridged when dry. Leaves reduced to bladeless sheaths up to 9.5 cm long, dark reddish or purplish, paler above; apex ± truncate, often with a narrow purple ring. Inflorescence a single, terminal, ovoid or lanceoloid-ovoid spikelet, 5–12 × 3–5 mm. Glumes 2.5–5 × 1.3–1.7 mm, c. 10–30 per spikelet, ovate to ovate-lanceolate, obtuse, with dark reddish-brown sides, paler towards the base, with paler brown or indistinct midrib and narrowly hyaline margins; only the lowest glume empty, more or less completely surrounding the base of the spikelet and with the inflorescence often tilted obliquely away from the point of insertion. Flowers bisexual; perianth bristles 0–5, mostly shorter than nut, often poorly developed; stamens 3, with anthers 2.2–2.3 mm long; stigmas 2. Nuts 1.4–2.2 × 1.1–1.5 mm, narrowly obovate, biconvex, yellowish-brown to dark brown; style-base broadly triangular, flattened, acute to obtuse, constricted at base, not confluent with nut. [details]

Description Perenne; rizoma de entrenudos ± largos, de 1,5-3 mm de diámetro, grueso, oscuro, cubierto de escamas translúcidas cuando...  
Description Perenne; rizoma de entrenudos ± largos, de 1,5-3 mm de diámetro, grueso, oscuro, cubierto de escamas translúcidas cuando joven. Tallos (9)14-40(60) cm × (0,5)1-2(3,5) mm, rectos a algo curvados, ligeramente estriados cuando secos, hasta con 20 haces vasculares. Vainas herbáceas, verdes, frecuentemente rojizas hacia la base, la superior con el ápice truncado horizontalmente o ligeramente oblicuo, con un pequeño mucrón obscuro. Espiguilla (4,5)9-14(35) mm, de contorno largamente ovado a lanceolado. Glumas (6)18-40(74) flores, laxa, con 20-30 glumas por cm. Glumas (3)3,5-4(5) mm, en disposición helicoidal, ovado-lanceoladas, de ápice agudo a obtuso, de color pardo-rojizas a pardo oscuro, con una banda central verdosa más clara, a veces muy ancha con márgenes escariosos ± anchos; la inferior (2)2,5-3,5(4) mm, estéril, de contorno ovado-lanceolado o suborbicular, con el ápice obtuso o redondeado, membranácea, que envuelve completamente la espiguilla en el momento de la antesis. Estambres 3; anteras 1,5-2 mm, amarillas o anaranjadas, apiculadas. Estilo (2)2,5-3(4) mm, con 2 estigmas, rojo, prontamente caedizo. Aquenios (1)1,2-1,5(7) × (0,7)1,2-1,5(7) mm, de contorno obovado a obpiriforme, anchamente biconvexos, finamente reticulados, amarillentos, en ocasiones teñidos de oliváceo o pardo-rojizo, algo brillantes; estilopodio (0,5-0,7)(1) × (0,4)0,7(1,2) mm, de textura esponjosa, estrangulado en la base, mamelonado, anchamente deltoide u orbicular, blanquecino, dorado o pardusco; cerdas periánticas (3)4-6, que alcanzan o superan al estilopodio, rara vez de menor longitud, retorso-escábridas, rojizas, doradas o blanquecinas. 2n = (40)44, 46*, (50*-54*), 62*, 68*, 69*, 71*-82*, (88*, 92*).** [details]

Description Plants perennial, mat-forming; rhizomes evident, long, 0.3–1 mm thick, soft to firm, cortex often fugaceous, longer...  
Description Plants perennial, mat-forming; rhizomes evident, long, 0.3–1 mm thick, soft to firm, cortex often fugaceous, longer internodes 10–25 mm, scales fugaceous, 5–6 mm, membranous, not fibrous. Culms terete, often with some blunt ridges when dry, (5–)10–60 cm × 0.2–1.5 mm, firm, internally spongy. Leaves: distal leaf sheaths persistent, not splitting, proximally red, distally stramineous to green, often callose, thinly papery to thickly membranous, apex often dark red-brown, obtuse to subacute, tooth absent. Spikelets ovoid to lanceoloid, 5–10 × 2–3(–4) mm, apex acute; proximal scale amplexicaulous, entire; subproximal scale with flower; floral scales often spreading in fruit, 10–20, 3–4 per mm of rachilla, brown to often red-brown, midrib regions mostly stramineous to green, broadly ovate, 3–4 × 1.8–2.5 mm, entire, apex acute to obtuse, often some carinate in distal part of spikelet. Flowers: perianth bristles 0–4(–5), light brown to stramineous, stout, usually unequal, rudimentary to equaling achene; stamens 3; anthers dark yellow to stramineous, 1.2–2 mm; styles 2-fid. Achenes not persistent, dark yellow or medium or dark brown, ellipsoid, obovoid, or obpyriform, biconvex, angles obscure, 1.3–1.8 × 1–1.4 mm, apex rounded, neck absent or short, smooth at 30X, or sometimes finely rugulose at 10–20X with 20 or more horizontal ridges in vertical series. Tubercles brown to whitish, pyramidal, much higher than wide to slightly depressed, sometimes spongy and with vertical rows of depressions, 0.4–0.8 × 0.3–0.8 mm. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Link) Schult. to Schult., information provided by Alan E....  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Link) Schult. to Schult., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis uniglumis (Link) Schult.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=577518 on 2026-05-22
Date
action
by
2011-07-25 13:58:46Z
created
db_admin
2023-09-05 06:47:53Z
checked
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin
2025-10-10 08:36:12Z
checked
Marco Rosado, Nuria

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


Nomenclature

original description (of Scirpus uniglumis Link) (1820). <em>Jahrbücher der Gewächskunde.</em> 1.
page(s): 77 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Schultes, J. H. (1824). Mantissa in volumen secundum. Systematis vegetabilium Caroli a Linné ex editione Joan. Jac. Roemer M.D. et Jos. Aug. Schultes M.D. vol. 2, pp. 1-522., available online at https://bibdigital.rjb.csic.es/records/item/11006-mantissa-volumen-secundum
page(s): 88 [details] 

Taxonomy

taxonomy source Jermy, A.C.; Simpson, D.A.; Foley, M.J.Y.; Porter, M.S. (2007). Sedges of the British Isles. 554 pp. Botanical Society of Britain & Ireland, United Kingdom. [details] Available for editors  PDF available [request]

taxonomy source Luceño, M., Castroviejo, S., Jiménez-Mejías, P. (2008). Cyperaceae. In: Castroviejo, Luceño, M., Galán, A., Jiménez-Mejías, P., Cabezas, F., Medina, L. (eds). Flora iberica. Plantas vasculares de la Península Ibérica e Islas Baleares. Vol. XVIII. Madrid: CSIC., available online at https://bibdigital.rjb.csic.es/records/item/12958-flora-iberica-vol-18-cyperaceae-pontederiaceae?offset=, http://www.floraiberica.es/PHP/familias_lista_.php?familia=Cyperaceae [details] 

Other

additional source Li, B. Z.; Zhang, S. R. (2024). An updated species checklist and taxonomic synopsis of Cyperaceae in China. <em>Biodiversity Science.</em> 32(7): 24106., available online at https://doi.org/10.17520/biods.2024106 [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Syntype (of Scirpus uniglumis Link) B 10 0296693, geounit Germany [details]
From editor or global species database
Description Rhizomes creeping, dark purplish. Stems up to 60 cm × 0.8–1.5(–1.9) mm, tufted, ± terete, smooth to indistinctly ridged when dry. Leaves reduced to bladeless sheaths up to 9.5 cm long, dark reddish or purplish, paler above; apex ± truncate, often with a narrow purple ring. Inflorescence a single, terminal, ovoid or lanceoloid-ovoid spikelet, 5–12 × 3–5 mm. Glumes 2.5–5 × 1.3–1.7 mm, c. 10–30 per spikelet, ovate to ovate-lanceolate, obtuse, with dark reddish-brown sides, paler towards the base, with paler brown or indistinct midrib and narrowly hyaline margins; only the lowest glume empty, more or less completely surrounding the base of the spikelet and with the inflorescence often tilted obliquely away from the point of insertion. Flowers bisexual; perianth bristles 0–5, mostly shorter than nut, often poorly developed; stamens 3, with anthers 2.2–2.3 mm long; stigmas 2. Nuts 1.4–2.2 × 1.1–1.5 mm, narrowly obovate, biconvex, yellowish-brown to dark brown; style-base broadly triangular, flattened, acute to obtuse, constricted at base, not confluent with nut. [details]

Description Perenne; rizoma de entrenudos ± largos, de 1,5-3 mm de diámetro, grueso, oscuro, cubierto de escamas translúcidas cuando joven. Tallos (9)14-40(60) cm × (0,5)1-2(3,5) mm, rectos a algo curvados, ligeramente estriados cuando secos, hasta con 20 haces vasculares. Vainas herbáceas, verdes, frecuentemente rojizas hacia la base, la superior con el ápice truncado horizontalmente o ligeramente oblicuo, con un pequeño mucrón obscuro. Espiguilla (4,5)9-14(35) mm, de contorno largamente ovado a lanceolado. Glumas (6)18-40(74) flores, laxa, con 20-30 glumas por cm. Glumas (3)3,5-4(5) mm, en disposición helicoidal, ovado-lanceoladas, de ápice agudo a obtuso, de color pardo-rojizas a pardo oscuro, con una banda central verdosa más clara, a veces muy ancha con márgenes escariosos ± anchos; la inferior (2)2,5-3,5(4) mm, estéril, de contorno ovado-lanceolado o suborbicular, con el ápice obtuso o redondeado, membranácea, que envuelve completamente la espiguilla en el momento de la antesis. Estambres 3; anteras 1,5-2 mm, amarillas o anaranjadas, apiculadas. Estilo (2)2,5-3(4) mm, con 2 estigmas, rojo, prontamente caedizo. Aquenios (1)1,2-1,5(7) × (0,7)1,2-1,5(7) mm, de contorno obovado a obpiriforme, anchamente biconvexos, finamente reticulados, amarillentos, en ocasiones teñidos de oliváceo o pardo-rojizo, algo brillantes; estilopodio (0,5-0,7)(1) × (0,4)0,7(1,2) mm, de textura esponjosa, estrangulado en la base, mamelonado, anchamente deltoide u orbicular, blanquecino, dorado o pardusco; cerdas periánticas (3)4-6, que alcanzan o superan al estilopodio, rara vez de menor longitud, retorso-escábridas, rojizas, doradas o blanquecinas. 2n = (40)44, 46*, (50*-54*), 62*, 68*, 69*, 71*-82*, (88*, 92*).** [details]

Description Plants perennial, mat-forming; rhizomes evident, long, 0.3–1 mm thick, soft to firm, cortex often fugaceous, longer internodes 10–25 mm, scales fugaceous, 5–6 mm, membranous, not fibrous. Culms terete, often with some blunt ridges when dry, (5–)10–60 cm × 0.2–1.5 mm, firm, internally spongy. Leaves: distal leaf sheaths persistent, not splitting, proximally red, distally stramineous to green, often callose, thinly papery to thickly membranous, apex often dark red-brown, obtuse to subacute, tooth absent. Spikelets ovoid to lanceoloid, 5–10 × 2–3(–4) mm, apex acute; proximal scale amplexicaulous, entire; subproximal scale with flower; floral scales often spreading in fruit, 10–20, 3–4 per mm of rachilla, brown to often red-brown, midrib regions mostly stramineous to green, broadly ovate, 3–4 × 1.8–2.5 mm, entire, apex acute to obtuse, often some carinate in distal part of spikelet. Flowers: perianth bristles 0–4(–5), light brown to stramineous, stout, usually unequal, rudimentary to equaling achene; stamens 3; anthers dark yellow to stramineous, 1.2–2 mm; styles 2-fid. Achenes not persistent, dark yellow or medium or dark brown, ellipsoid, obovoid, or obpyriform, biconvex, angles obscure, 1.3–1.8 × 1–1.4 mm, apex rounded, neck absent or short, smooth at 30X, or sometimes finely rugulose at 10–20X with 20 or more horizontal ridges in vertical series. Tubercles brown to whitish, pyramidal, much higher than wide to slightly depressed, sometimes spongy and with vertical rows of depressions, 0.4–0.8 × 0.3–0.8 mm. [details]

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

Translation Perennial; rhizome with ± long internodes, 1.5–3 mm in diameter, thick, dark, covered with translucent scales when young. Culms (9)14–40(60) cm × (0.5)1–2(3.5) mm, straight to somewhat curved, slightly striate when dry, with up to 20 vascular bundles. Leaf sheaths herbaceous, green, often reddish toward the base, the upper one with a horizontally truncate or slightly oblique apex, bearing a small dark mucro. Spikelet (4.5)9–14(35) mm long, outline elongate-ovoid to lanceolate. Spikelet lax, with (6)18–40(74) flowers, 20–30 glumes per centimeter. Glumes (3)3.5–4(5) mm, helically arranged, ovate-lanceolate, with apex acute to obtuse, brown-reddish to dark brown, with a lighter central greenish band, sometimes very wide and with ± broad scarious margins; the lower glume (2)2.5–3.5(4) mm, sterile, ovate-lanceolate to suborbicular, with obtuse or rounded apex, membranous, completely enclosing the spikelet at anthesis. Stamens 3; anthers 1.5–2 mm, yellow or orange, apiculate. Style (2)2.5–3(4) mm, with 2 stigmas, red, soon deciduous. Achenes (1)1.2–1.5(7) × (0.7)1.2–1.5(7) mm, obovate to obpyriform, broadly biconvex, finely reticulate, yellowish, sometimes tinged olive or reddish-brown, somewhat shiny; stylopodium (0.5–0.7)(1) × (0.4)0.7(1.2) mm, spongy in texture, constricted at the base, mamillate, broadly deltoid or orbicular, whitish, golden or brownish; perianth bristles (3)4–6, equaling or exceeding the stylopodium, rarely shorter, retrorsely scabrous, reddish, golden or whitish. 2n = (40)44, 46*, (50*–54*), 62*, 68*, 69*, 71*–82*, (88*, 92*).** [details]
    Definitions

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LanguageName 
Dutch slanke waterbies  [details]
English saltmarsh spikerushonescale spikerush  [details]
To Barcode of Life (16 barcodes) 
To Biodiversity Heritage Library (1 publication) (from synonym Cyperus uniglumis (Link) Missbach & E.H.L.Krause)
To Biodiversity Heritage Library (19 publications) (from synonym Eleocharis halophila (Fernald & Brackett) Fernald & Brackett)
To Biodiversity Heritage Library (193 publications) 
To Biodiversity Heritage Library (226 publications) (from synonym Scirpus uniglumis Link)
To Biodiversity Heritage Library (6 publications) (from synonym Clavula uniglumis (Link) Dumort.)
To European Nucleotide Archive, ENA (Eleocharis uniglumis) 
To GenBank (67 nucleotides; 44 proteins) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Eleocharis halophila (Fernald & Brackett) Fernald & Brackett)
To International Plant Names Index (IPNI) (from synonym Clavula uniglumis (Link) Dumort.)
To International Plant Names Index (IPNI) (from synonym Eleocharis palustris subsp. uniglumis (Link) Hartm.)
To International Plant Names Index (IPNI) (from synonym Cyperus uniglumis (Link) Missbach & E.H.L.Krause)
To International Plant Names Index (IPNI) (from synonym Scirpus uniglumis Link)
To International Plant Names Index (IPNI) (from synonym Scirpus palustris subsp. uniglumis (Link) Moritzi)
To International Plant Names Index (IPNI) (from synonym Eleocharis uniglumis var. typica Fernald & Brackett)
To IUCN Red List (Least Concern) 
To NHMUK collection (Eleocharis uniglumis (Link) Schult.; NHMUK:ecatalogue:9256728) 
To Plants of the World Online 
To Plants of the World Online (from synonym Eleocharis halophila (Fernald & Brackett) Fernald & Brackett)
To Plants of the World Online (from synonym Clavula uniglumis (Link) Dumort.)
To Plants of the World Online (from synonym Cyperus uniglumis (Link) Missbach & E.H.L.Krause)
To Plants of the World Online (from synonym Scirpus palustris var. uniglumis (Link) Hartm.)
To Plants of the World Online (from synonym Eleocharis uniglumis var. typica Fernald & Brackett)
To Plants of the World Online (from synonym Scirpus uniglumis Link)
To Plants of the World Online (from synonym Scirpus palustris subsp. uniglumis (Link) Moritzi)
To Plants of the World Online (from synonym Eleocharis palustris subsp. uniglumis (Link) Hartm.)
To the Natural History Museum, London (Eleocharis uniglumis (Link) Schult. BM001066942 type 1) 
To the Natural History Museum, London (Eleocharis uniglumis (Link) Schult. BM001066943 type 1) 
To ITIS
From editor or global species database
Unreviewed
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