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Cyperaceae taxon details

Eleocharis quinqueflora (Hartmann) O.Schwarz

1680550  (urn:lsid:marinespecies.org:taxname:1680550)

accepted
Species
Isolepis andina Phil. · unaccepted
Scirpus halleri Vill. · unaccepted
Scirpus sepium Honck. · unaccepted

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terrestrial
(of Scirpus quinqueflorus Hartmann) (1767). Primarum linearum institutionum botanicarum clarissimi viri Crantzii editio altera continens characteristicas omnium classium icones, additamenta novorum generum et specierum. , available online at https://www.biodiversitylibrary.org/page/7456579#page/4/mode/1up
page(s): 85 [details] 
Description Rhizomes stout, shortly creeping. Stems 3.5–40 cm × 0.4–1 mm, loosely to densely tufted, terete, smooth. Leaves...  
Description Rhizomes stout, shortly creeping. Stems 3.5–40 cm × 0.4–1 mm, loosely to densely tufted, terete, smooth. Leaves reduced to bladeless sheaths up to 11 cm long, pale yellowish to brownish; apex obliquely obtuse to truncate. Inflorescence a single, terminal, ovoid to ellipsoid spikelet, 4–10 × 3–5 mm. Glumes 2.5–7 × 1.2–2.2 mm, up to 7 per spikelet, lanceolate to oblong-lanceolate, obtuse to acute, with mid to dark brown sides, green midrib and scarious margins, the lowest glume half or more as long as the spikelet and completely surrounding it at its base. Flowers bisexual; perianth bristles 4–6, shorter to longer than nut; stamens 3, with their anthers 1.8–2.1 mm long; stigmas 3. Nuts 2–3 × 1–1.2 mm, narrowly obovoid to obovoid, trigonous, blackish to grey, reticulate with rectangular epidermal cells; style-base narrowly triangular, confluent with nut. [details]

Description Perenne, cespitosa; rizoma de entrenudos largos, de 0,5–0,75 mm de diámetro, de rojizo a pardo oscuro, cubierto de...  
Description Perenne, cespitosa; rizoma de entrenudos largos, de 0,5–0,75 mm de diámetro, de rojizo a pardo oscuro, cubierto de escamas translúcidas cuando joven y terminado en grandes yemas de un color que varía del blanco al rojizo. Tallos (4)6–24(33) cm × (0,25)0,5–1(1,25) mm, rectos o algo curvados, prácticamente lisos cuando están frescos, ásperos y surcados cuando secos, verdes, a veces glaucescentes. Vainas herbáceas, en muchas ocasiones teñidas de rojo hacia la base, a veces decoloradas, la superior de ápice oblicuamente truncada, frecuentemente punteado de rojo y en ocasiones algo hialino. Espiguilla (3,7)5–6(7) mm, de contorno ovado a elíptico, con (3)4–8(9) flores. Glumas (2,5)3–5(6) mm, en disposición subdistica, ovadas u ovado-lanceoladas, de ápice agudo u obtuso, de color pardo-rojizo a pardo oscuro, con una banda central verdosa, a veces imperceptible, y márgenes escariosos ± estrechos, que se pliegan notablemente en la fructificación para envolver los aquenios; la inferior sobrepasa largamente la longitud de la espiguilla y rodea en su base, generalmente estéril, aunque en ocasiones los granos sexuales pueden abortar. Estambres 3; anteras 1,5–2 mm, amarillas o anaranjadas, apiculadas, frecuentemente con el mucro teñido de rojo. Estilo 2–3(5) mm, con 3 estigmas, por lo común persistente, a veces tardíamente caedizo, de rojizo a negruzco. Aquenios (1,5)2–2,5 × 1,2–1,5(1,7) mm, de contorno estrechamente obovado, trígonos, finamente reticulados, de color que varía del pardo al pardo rojizo oscuro, que puede tornar a grisáceo cuando están secos, recubiertos por una membrana frágil y translúcida, que termina por desprenderse; estilopodio de contorno triangular, atenuado en la base, negruzco al menos en la mitad superior; cerdas perianticas 3 o 6, que sobrepasan el cuerpo del aquenio, retorso-escábridas, de rojizas a doradas. 2n = 132* (134*). [details]

Description Plants perennial; rhizomes 0.2–1 mm thick, scales persistent or fugaceous, 2–4(–7) mm, thinly membranous, not...  
Description Plants perennial; rhizomes 0.2–1 mm thick, scales persistent or fugaceous, 2–4(–7) mm, thinly membranous, not fibrous; resting buds often present on rhizomes or among culm bases, broadly to narrowly ovoid, 3–6(–10) × 2–5 mm; caudices absent, rarely present, soft or rarely hard, 0.5 mm thick. Culms erect, not spirally twisted, not contracted near spikelet, when dry usually with several blunt to acute ridges and sulcate, subterete to slightly compressed, to 2 times wider than thick, 5–35 cm × 0.2–0.5(–1.2) mm, soft to hard; culm tufts often proximally bulbous (if bulbous then tunicated by papery-fibrous scales). Leaves: distal leaf sheaths stramineous to brown or reddish proximally, green to stramineous or brown distally, membranous to papery, apex often reddish, subtruncate to acute. Spikelets 3–8 × 1.5–4 mm; proximal scale with a flower, seldom empty, 2–5 mm, 1/2 or more as long as spikelet; floral scales 3–10 per spikelet, 2.5–6 × 1.5–2.5 mm. Flowers: perianth bristles (0–)3–6, often unequal, rudimentary to equaling tubercle, stout to slender, spinules dense to apparently absent; anthers 1.5–2.7(–3.5) mm. Achenes stramineous to medium brown or gray-brown, equilaterally trigonous to compressed-trigonous, rarely some biconvex, obpyriform (to obovoid), 1.6–2.3 × 0.7–1.3 mm, beak variable. Tubercles rarely absent, 0.3–0.4 × 0.2–0.3 mm. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mitt. Thüring. Bot. Ges. 1: 89 1949 to Mitt. Thüring. Bot. Ges. 1:...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mitt. Thüring. Bot. Ges. 1: 89 1949 to Mitt. Thüring. Bot. Ges. 1: 89 (1949), 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 quinqueflora (Hartmann) O.Schwarz. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680550 on 2026-01-12
Date
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by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
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2025-10-09 07:18:13Z
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Nomenclature

original description (of Scirpus quinqueflorus Hartmann) (1767). Primarum linearum institutionum botanicarum clarissimi viri Crantzii editio altera continens characteristicas omnium classium icones, additamenta novorum generum et specierum. , available online at https://www.biodiversitylibrary.org/page/7456579#page/4/mode/1up
page(s): 85 [details] 

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

new combination reference (1949). Mitt. Thüring. Bot. Ges. 1
page(s): 89 [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 BM 001066952, geounit Germany [details]
From editor or global species database
Description Rhizomes stout, shortly creeping. Stems 3.5–40 cm × 0.4–1 mm, loosely to densely tufted, terete, smooth. Leaves reduced to bladeless sheaths up to 11 cm long, pale yellowish to brownish; apex obliquely obtuse to truncate. Inflorescence a single, terminal, ovoid to ellipsoid spikelet, 4–10 × 3–5 mm. Glumes 2.5–7 × 1.2–2.2 mm, up to 7 per spikelet, lanceolate to oblong-lanceolate, obtuse to acute, with mid to dark brown sides, green midrib and scarious margins, the lowest glume half or more as long as the spikelet and completely surrounding it at its base. Flowers bisexual; perianth bristles 4–6, shorter to longer than nut; stamens 3, with their anthers 1.8–2.1 mm long; stigmas 3. Nuts 2–3 × 1–1.2 mm, narrowly obovoid to obovoid, trigonous, blackish to grey, reticulate with rectangular epidermal cells; style-base narrowly triangular, confluent with nut. [details]

Description Perenne, cespitosa; rizoma de entrenudos largos, de 0,5–0,75 mm de diámetro, de rojizo a pardo oscuro, cubierto de escamas translúcidas cuando joven y terminado en grandes yemas de un color que varía del blanco al rojizo. Tallos (4)6–24(33) cm × (0,25)0,5–1(1,25) mm, rectos o algo curvados, prácticamente lisos cuando están frescos, ásperos y surcados cuando secos, verdes, a veces glaucescentes. Vainas herbáceas, en muchas ocasiones teñidas de rojo hacia la base, a veces decoloradas, la superior de ápice oblicuamente truncada, frecuentemente punteado de rojo y en ocasiones algo hialino. Espiguilla (3,7)5–6(7) mm, de contorno ovado a elíptico, con (3)4–8(9) flores. Glumas (2,5)3–5(6) mm, en disposición subdistica, ovadas u ovado-lanceoladas, de ápice agudo u obtuso, de color pardo-rojizo a pardo oscuro, con una banda central verdosa, a veces imperceptible, y márgenes escariosos ± estrechos, que se pliegan notablemente en la fructificación para envolver los aquenios; la inferior sobrepasa largamente la longitud de la espiguilla y rodea en su base, generalmente estéril, aunque en ocasiones los granos sexuales pueden abortar. Estambres 3; anteras 1,5–2 mm, amarillas o anaranjadas, apiculadas, frecuentemente con el mucro teñido de rojo. Estilo 2–3(5) mm, con 3 estigmas, por lo común persistente, a veces tardíamente caedizo, de rojizo a negruzco. Aquenios (1,5)2–2,5 × 1,2–1,5(1,7) mm, de contorno estrechamente obovado, trígonos, finamente reticulados, de color que varía del pardo al pardo rojizo oscuro, que puede tornar a grisáceo cuando están secos, recubiertos por una membrana frágil y translúcida, que termina por desprenderse; estilopodio de contorno triangular, atenuado en la base, negruzco al menos en la mitad superior; cerdas perianticas 3 o 6, que sobrepasan el cuerpo del aquenio, retorso-escábridas, de rojizas a doradas. 2n = 132* (134*). [details]

Description Plants perennial; rhizomes 0.2–1 mm thick, scales persistent or fugaceous, 2–4(–7) mm, thinly membranous, not fibrous; resting buds often present on rhizomes or among culm bases, broadly to narrowly ovoid, 3–6(–10) × 2–5 mm; caudices absent, rarely present, soft or rarely hard, 0.5 mm thick. Culms erect, not spirally twisted, not contracted near spikelet, when dry usually with several blunt to acute ridges and sulcate, subterete to slightly compressed, to 2 times wider than thick, 5–35 cm × 0.2–0.5(–1.2) mm, soft to hard; culm tufts often proximally bulbous (if bulbous then tunicated by papery-fibrous scales). Leaves: distal leaf sheaths stramineous to brown or reddish proximally, green to stramineous or brown distally, membranous to papery, apex often reddish, subtruncate to acute. Spikelets 3–8 × 1.5–4 mm; proximal scale with a flower, seldom empty, 2–5 mm, 1/2 or more as long as spikelet; floral scales 3–10 per spikelet, 2.5–6 × 1.5–2.5 mm. Flowers: perianth bristles (0–)3–6, often unequal, rudimentary to equaling tubercle, stout to slender, spinules dense to apparently absent; anthers 1.5–2.7(–3.5) mm. Achenes stramineous to medium brown or gray-brown, equilaterally trigonous to compressed-trigonous, rarely some biconvex, obpyriform (to obovoid), 1.6–2.3 × 0.7–1.3 mm, beak variable. Tubercles rarely absent, 0.3–0.4 × 0.2–0.3 mm. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mitt. Thüring. Bot. Ges. 1: 89 1949 to Mitt. Thüring. Bot. Ges. 1: 89 (1949), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]

Translation Perennial, cespitose; rhizome with long internodes, 0.5–0.75 mm in diameter, reddish to dark brown, covered with translucent scales when young and ending in large buds whose colour ranges from white to reddish. Stems (4)6–24(33) cm × (0.25)0.5–1(1.25) mm, straight or somewhat curved, practically smooth when fresh, rough and furrowed when dry, green, sometimes glaucous. Leaf sheaths herbaceous, often tinged red toward the base, sometimes decoloured, the uppermost with an obliquely truncate apex, frequently red-dotted and occasionally slightly hyaline. Spikelet (3.7)5–6(7) mm, ovate to elliptic in outline, with (3)4–8(9) flowers. Glumes (2.5)3–5(6) mm, subdistichously arranged, ovate or ovate-lanceolate, with an acute to obtuse apex, reddish-brown to dark brown, with a greenish central band, sometimes inconspicuous, and ± narrow scarious margins that fold markedly during fruiting to enclose the achenes; the lowest glume far exceeds the spikelet length and surrounds it at the base, generally sterile, though in some cases the sexual organs may abort. Stamens 3; anthers 1.5–2 mm, yellow to orange, apiculate, frequently with the mucro tinged red. Style 2–3(5) mm, with 3 stigmas, usually persistent though sometimes tardily deciduous, reddish to blackish. Achenes (1.5)2–2.5 × 1.2–1.5(1.7) mm, narrowly obovoid in outline, trigonous, finely reticulate, varying from brown to dark reddish-brown, becoming greyish when dry, covered by a fragile translucent membrane that eventually detaches; stylopodium triangular in outline, attenuate at the base, blackish at least in its upper half; perianth bristles 3 or 6, exceeding the achene body, retrorsely scabrid, reddish to golden. 2n = 132* (134*). [details]
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