WoRMS taxon details

Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer

To New York Botanical Garden Steere Herbarium (Eleocharis_pygmaea_NY235224_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_pygmaea_NY235224_type_1)

715995  (urn:lsid:marinespecies.org:taxname:715995)

  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 parvula (Species)
accepted
Species

Ordering

  • Alphabetically
  • By status

Children Display

marine, brackish, fresh
(of Scirpus parvulus Roem. & Schult.) Linné, C. V.; Römer, J. J.; Schultes, J. A.; Schultes, J. H.; Sprengel, K. P. J.;. (1817). Caroli a Linné ... Systema vegetabilium :secundum classes, ordines, genera, species. Cum characteribus, differentiis et synonymiis. vol. 2, pp. 1-964., available online at https://www.biodiversitylibrary.org/page/719829#page/1/mode/1up
page(s): 124 [details] 
Description Plants connected by whitish capillary stolons creeping on the surface, often terminating in a small whitish tuber. Stems...  
Description Plants connected by whitish capillary stolons creeping on the surface, often terminating in a small whitish tuber. Stems 2–8 cm × 0.3–0.5 mm, sparsely tufted, terete, often spongy, smooth to minutely septate-nodulose when dry, often flowerless and leaf-like. Leaves reduced to bladeless sheaths up to 1 cm long, translucent, indistinct. Inflorescence a single, terminal, ovoid to ovoid-ellipsoid spikelet, 1.9–4 × 1–1.5 mm. Glumes 1.2–2.5 × 1–2 mm, up to 9 per spikelet, ovate, with an obtuse to acute apex and greenish to yellowish-brown striate margins and indistinct midrib, the lowest glume usually empty and half or more as long as the spikelet, completely surrounding its base. Flowers bisexual; perianth bristles usually 3, equalling or longer than nut; stamens 3, with their anthers 1.0–1.2 mm long; stigmas 3. Nuts 1.0–1.4 mm* long, obovoid, trigonous, pale yellowish, smooth to very minutely reticulate, shiny; style-base small, conical, confluent with nut. [details]

Description Perenne, laxamente cespitosa de porte muy reducido; raíces capilares; estolones horizontales muy finos, terminados en...  
Description Perenne, laxamente cespitosa de porte muy reducido; raíces capilares; estolones horizontales muy finos, terminados en pequeños bulbillos ovoides, de color rojizo o blanquecino y hasta de 3 mm, de donde nace una nueva planta. Tallos (1,5)2–8(12) cm × 0,2–0,5(0,7) mm, capilares, rectos, estriados y surcados cuando secos. Vainas escariosas, frecuentemente rojizas hacia la base, que pueden estar deshilachadas o deschacadas prontamente. Espiguilla 2,8–3,5(3,8) mm, de contorno ovado, con 4–5 flores. Glumas (1,1)1,5–2 mm, en disposición subdística, ovado-lanceoladas, de color pardo-rojizo, con una banda verdosa en el centro y márgenes escariosos; la inferior suele alcanzar o superar la mitad de la longitud de la espiguilla y es estéril, muy rara vez fértil. Estambres 3; anteras 1–1,5 mm, amarillas, apiculadas, con el mucrón teñido de rojizo. Estilo 1–1,5 mm, con 3 estigmas, rojizo, persistente o tardíamente caedizo. Aquenios 1 × 0,3–0,7 mm, de contorno estrechamente obovado, trígonos, muy finamente reticulados, de color pardusco, oliváceo o pajizo, ± brillantes; estilopodio piramidal, atenuado en la zona de unión con el aquenio y delimitado del mismo por un minúsculo reborde, de color blanquecino, rojizo o negruzco; cerdas periantias 3–6, que sobrepasan al aquenio, retrorso-escábridas, blancas o rojizas. 2n = 10.* [details]

Description Tubers terminating rhizomes usually markedly J- or horseshoe-shaped, body (apart from apical bud) oblong, 2–2.5(–5) ×...  
Description Tubers terminating rhizomes usually markedly J- or horseshoe-shaped, body (apart from apical bud) oblong, 2–2.5(–5) × 0.5–1 mm; tubers among culm bases straight, narrowly fusiform, 4–5 mm. Spikelets 2–4 × 1–2 mm, sometimes absent in deeper water; proximal scale 1/2 or more of spikelet length; floral scales 6–10 per spikelet, 1.4–2.7 mm, commonly entirely stramineous, apex rounded to subacute. Flowers: perianth bristles 6, stramineous, fairly stout to slender, usually equaling achene to slightly exceeding tubercle, sometimes unequal and some 1/2 of achene, very rarely rudimentary, minutely retrorsely spinulose; anthers 0.7–1.2 mm. Achenes stramineous, sometimes pale brown, obovoid to obpyriform, thickly trigonous, angles distinct, faces concave to plane, rarely convex, 0.9–1.2 × 0.55–0.75 mm, apex tapered, smooth or faintly rough at 30X. Tubercles 0.1–0.2 × 0.15 mm. 2n = 10 (Europe). [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Comp. Fl. German. (ed. 2) [Bluff & Fingerhuth] 1(1): 93. 1836 [Jan...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Comp. Fl. German. (ed. 2) [Bluff & Fingerhuth] 1(1): 93. 1836 [Jan 1836] to Comp. Fl. German. , ed. 2, 1: 93 (1836), information provided by Alan E. on email Jun. 07 2021 More details could be found  [details]
Cyperaceae Working Group. (2026). [see How to cite]. Global Cyperaceae Database. Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=715995 on 2026-03-09
Date
action
by
2013-01-18 08:55:10Z
created
Decock, Wim
2023-09-05 06:47:53Z
changed
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin
2025-10-08 07:56:20Z
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 parvulus Roem. & Schult.) Linné, C. V.; Römer, J. J.; Schultes, J. A.; Schultes, J. H.; Sprengel, K. P. J.;. (1817). Caroli a Linné ... Systema vegetabilium :secundum classes, ordines, genera, species. Cum characteribus, differentiis et synonymiis. vol. 2, pp. 1-964., available online at https://www.biodiversitylibrary.org/page/719829#page/1/mode/1up
page(s): 124 [details] 

basis of record PESI - Pan-European Species directories Infrastructure, available online at http://www.eu-nomen.eu/portal/ [details] 

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

new combination reference Schauer, J. C. (1836). Compendium florae Germaniae. Sectio I, Plantae phanerogamicae seu vasculosae. 1., available online at https://www.biodiversitylibrary.org/page/6139595#page/7/mode/1up
page(s): 93 [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  Present in aphia/obis/gbif/idigbio   Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Description Plants connected by whitish capillary stolons creeping on the surface, often terminating in a small whitish tuber. Stems 2–8 cm × 0.3–0.5 mm, sparsely tufted, terete, often spongy, smooth to minutely septate-nodulose when dry, often flowerless and leaf-like. Leaves reduced to bladeless sheaths up to 1 cm long, translucent, indistinct. Inflorescence a single, terminal, ovoid to ovoid-ellipsoid spikelet, 1.9–4 × 1–1.5 mm. Glumes 1.2–2.5 × 1–2 mm, up to 9 per spikelet, ovate, with an obtuse to acute apex and greenish to yellowish-brown striate margins and indistinct midrib, the lowest glume usually empty and half or more as long as the spikelet, completely surrounding its base. Flowers bisexual; perianth bristles usually 3, equalling or longer than nut; stamens 3, with their anthers 1.0–1.2 mm long; stigmas 3. Nuts 1.0–1.4 mm* long, obovoid, trigonous, pale yellowish, smooth to very minutely reticulate, shiny; style-base small, conical, confluent with nut. [details]

Description Perenne, laxamente cespitosa de porte muy reducido; raíces capilares; estolones horizontales muy finos, terminados en pequeños bulbillos ovoides, de color rojizo o blanquecino y hasta de 3 mm, de donde nace una nueva planta. Tallos (1,5)2–8(12) cm × 0,2–0,5(0,7) mm, capilares, rectos, estriados y surcados cuando secos. Vainas escariosas, frecuentemente rojizas hacia la base, que pueden estar deshilachadas o deschacadas prontamente. Espiguilla 2,8–3,5(3,8) mm, de contorno ovado, con 4–5 flores. Glumas (1,1)1,5–2 mm, en disposición subdística, ovado-lanceoladas, de color pardo-rojizo, con una banda verdosa en el centro y márgenes escariosos; la inferior suele alcanzar o superar la mitad de la longitud de la espiguilla y es estéril, muy rara vez fértil. Estambres 3; anteras 1–1,5 mm, amarillas, apiculadas, con el mucrón teñido de rojizo. Estilo 1–1,5 mm, con 3 estigmas, rojizo, persistente o tardíamente caedizo. Aquenios 1 × 0,3–0,7 mm, de contorno estrechamente obovado, trígonos, muy finamente reticulados, de color pardusco, oliváceo o pajizo, ± brillantes; estilopodio piramidal, atenuado en la zona de unión con el aquenio y delimitado del mismo por un minúsculo reborde, de color blanquecino, rojizo o negruzco; cerdas periantias 3–6, que sobrepasan al aquenio, retrorso-escábridas, blancas o rojizas. 2n = 10.* [details]

Description Tubers terminating rhizomes usually markedly J- or horseshoe-shaped, body (apart from apical bud) oblong, 2–2.5(–5) × 0.5–1 mm; tubers among culm bases straight, narrowly fusiform, 4–5 mm. Spikelets 2–4 × 1–2 mm, sometimes absent in deeper water; proximal scale 1/2 or more of spikelet length; floral scales 6–10 per spikelet, 1.4–2.7 mm, commonly entirely stramineous, apex rounded to subacute. Flowers: perianth bristles 6, stramineous, fairly stout to slender, usually equaling achene to slightly exceeding tubercle, sometimes unequal and some 1/2 of achene, very rarely rudimentary, minutely retrorsely spinulose; anthers 0.7–1.2 mm. Achenes stramineous, sometimes pale brown, obovoid to obpyriform, thickly trigonous, angles distinct, faces concave to plane, rarely convex, 0.9–1.2 × 0.55–0.75 mm, apex tapered, smooth or faintly rough at 30X. Tubercles 0.1–0.2 × 0.15 mm. 2n = 10 (Europe). [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Comp. Fl. German. (ed. 2) [Bluff & Fingerhuth] 1(1): 93. 1836 [Jan 1836] to Comp. Fl. German. , ed. 2, 1: 93 (1836), information provided by Alan E. on email Jun. 07 2021 More details could be found  [details]

Translation Perennial, loosely tufted and very small in habit; roots capillary; horizontal stolons very slender, ending in small ovoid bulbils, reddish or whitish in color and up to 3 mm, from which a new plant arises. Culms (1.5)2–8(12) cm × 0.2–0.5(0.7) mm, capillary, straight, striate and furrowed when dry. Sheaths scarious, often reddish toward the base, sometimes soon frayed or torn. Spikelet 2.8–3.5(3.8) mm, ovate in outline, with 4–5 flowers. Glumes (1.1)1.5–2 mm, subdistichous, ovate-lanceolate, brownish-reddish, with a greenish central band and scarious margins; the lower glume usually reaching or exceeding half the length of the spikelet and sterile, very rarely fertile. Stamens 3; anthers 1–1.5 mm, yellow, apiculate, with the mucro tinged reddish. Style 1–1.5 mm, with 3 stigmas, reddish, persistent or tardily deciduous. Achenes 1 × 0.3–0.7 mm, narrowly obovate in outline, trigonous, very finely reticulate, brownish, olivaceous or straw-colored, ± shiny; stylopodium pyramidal, attenuated at the point of attachment to the achene and separated from it by a minute ridge, whitish, reddish or blackish; perianth bristles 3–6, exceeding the achene, retrorsely scabrid, white or reddish. 2n = 10*. [details]
    Definitions

Loading...
LanguageName 
Dutch dwergnaaldgras  [details]
English dwarf spike-rush  [details]
Swedish dvärgsäv  [details]
From editor or global species database

WoRMS

Using WoRMS

Tools

Connect with us

This service is powered by LifeWatch Belgium
Learn more»
Website and databases developed and hosted by Flanders Marine Institute · Page generated on 2026-03-09 17:19:13+01:00 · Privacy and cookie policy