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Cyperaceae taxon details

Eleocharis geniculata (L.) Roem. & Schult.

To Genève Herbarium (Eleocharis melanosperma G00098359 isolectotype 1)
To Genève Herbarium (Eleocharis melanosperma G00098359 isolectotype 1)

1491861  (urn:lsid:marinespecies.org:taxname:1491861)

  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 geniculata (Species)
accepted
Species
Eleocharis setacea R.Br. · unaccepted > junior subjective synonym
Scirpus capitatus L. · unaccepted
Scirpus repens Willd. · unaccepted

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terrestrial
Not documented
Description Plants tufted, without creeping rhizomes. Culms to 45 cm × 0.2–1 mm. Leaves: distal leaf sheaths persistent, firm,...  
Description Plants tufted, without creeping rhizomes. Culms to 45 cm × 0.2–1 mm. Leaves: distal leaf sheaths persistent, firm, distally tightly sheathing, apex acute. Spikelets orbicular to ovoid, 1–9 × 1–4 mm, apex rounded to acute; proximal scale without flower, not amplexicaulous; floral scales to 125, 11–14 per mm of rachilla, tightly appressed, dark red-brown to stramineous, ovate to elliptic, 0.8–3 × 0.6–2(–2.3) mm, membranous to cartilaginous, apex rounded to acute. Flowers: perianth bristles (0–)4–8, typically 7, red-brown, rarely whitish, vestigial to much exceeding tubercle, typically equaling achene, spinules few to dense; styles 2-fid. Achenes brown ripening to black, biconvex, orbicular to obpyriform, 0.5–1.1 × 0.3–0.7 mm, apex rarely constricted proximal to tubercle, very finely reticulate at 40X. Tubercles stramineous to whitish, umbonate to subconic, 0.2–0.4 × 0.2–0.5 mm, apex rounded to acute. 2n = 10. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. 2: 150 1817 to Syst. Veg., ed. 15 bis 2: 150 (1817),...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. 2: 150 1817 to Syst. Veg., ed. 15 bis 2: 150 (1817), 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 geniculata (L.) Roem. & Schult.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1491861 on 2025-09-12
Date
action
by
2021-03-16 12:37:04Z
created
db_admin
2023-09-05 06:47:53Z
changed
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin

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


Nomenclature

original description (of Eleocharis setacea R.Br.) Brown, R. (1810). Prodromus florae Novae Hollandiae et Insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805 per oras utriusque insulae collegit et descripsit Robertus Brown; insertis passim aliis speciebus auctori hucusque cognitis, seu evulgatis, seu ineditis, praesertim Banksianis, in primo itinere navarchi Cook detectis. Vol. 1 pp. [i]-viii, 145-590 p., [1] h. ["Addenda"]. Londini [London]: typis Richardi Taylori et Scoii. Veneunt apud J. Johnson et Socios, in Caementerio Sancti Pauli., available online at https://www.biodiversitylibrary.org/page/6157371
page(s): 225 [details] 

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

From editor or global species database
Description Plants tufted, without creeping rhizomes. Culms to 45 cm × 0.2–1 mm. Leaves: distal leaf sheaths persistent, firm, distally tightly sheathing, apex acute. Spikelets orbicular to ovoid, 1–9 × 1–4 mm, apex rounded to acute; proximal scale without flower, not amplexicaulous; floral scales to 125, 11–14 per mm of rachilla, tightly appressed, dark red-brown to stramineous, ovate to elliptic, 0.8–3 × 0.6–2(–2.3) mm, membranous to cartilaginous, apex rounded to acute. Flowers: perianth bristles (0–)4–8, typically 7, red-brown, rarely whitish, vestigial to much exceeding tubercle, typically equaling achene, spinules few to dense; styles 2-fid. Achenes brown ripening to black, biconvex, orbicular to obpyriform, 0.5–1.1 × 0.3–0.7 mm, apex rarely constricted proximal to tubercle, very finely reticulate at 40X. Tubercles stramineous to whitish, umbonate to subconic, 0.2–0.4 × 0.2–0.5 mm, apex rounded to acute. 2n = 10. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. 2: 150 1817 to Syst. Veg., ed. 15 bis 2: 150 (1817), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
LanguageName 
English capitate spikerushCanada spikesedge  [details]
To Barcode of Life (9 barcodes) 
To Biodiversity Heritage Library (1 publication) (from synonym Eleocharis melanosperma Steud.)
To Biodiversity Heritage Library (1 publication) (from synonym Limnochloa densa Liebm.)
To Biodiversity Heritage Library (1 publication) (from synonym Eleocharis geniculata var. minor (Vahl) Roem. & Schult.)
To Biodiversity Heritage Library (1 publication) (from synonym Scirpus geniculatus var. minor Vahl)
To Biodiversity Heritage Library (1 publication) (from synonym Eleocharis caribaea var. stokesii F.Br.)
To Biodiversity Heritage Library (11 publications) (from synonym Limnochloa constricta (Schrad. ex Kunth) Nees)
To Biodiversity Heritage Library (13 publications) (from synonym Scirpus constrictus Schrad. ex Kunth)
To Biodiversity Heritage Library (13 publications) (from synonym Scirpus constrictus (Nees) Griseb.)
To Biodiversity Heritage Library (134 publications) 
To Biodiversity Heritage Library (14 publications) (from synonym Limnochloa geniculata (L.) Nees)
To Biodiversity Heritage Library (17 publications) (from synonym Scirpus repens Willd.)
To Biodiversity Heritage Library (2 publications) (from synonym Trichophyllum capitatum (L.) House)
To Biodiversity Heritage Library (2 publications) (from synonym Eleocharis valida Boeckeler)
To Biodiversity Heritage Library (2 publications) (from synonym Scirpus brownii Spreng.)
To Biodiversity Heritage Library (2 publications) (from synonym Chlorocharis geniculata (L.) Rikli)
To Biodiversity Heritage Library (24 publications) (from synonym Eleocharis dispar E.J.Hill)
To Biodiversity Heritage Library (26 publications) (from synonym Eleocharis setacea R.Br.)
To Biodiversity Heritage Library (272 publications) (from synonym Eleocharis capitata (L.) R.Br.)
To Biodiversity Heritage Library (272 publications) (from synonym Eleocharis capitata Miq.)
To Biodiversity Heritage Library (285 publications) (from synonym Scirpus capitatus L.)
To Biodiversity Heritage Library (3 publications) (from synonym Eleocharis singularis Steud.)
To Biodiversity Heritage Library (4 publications) (from synonym Eleocharis sintenisii Boeckeler)
To Biodiversity Heritage Library (4 publications) (from synonym Eleocharis mexicana Peyr.)
To Biodiversity Heritage Library (42 publications) (from synonym Eleogenus capitatus (L.) Nees ex Mart.)
To Biodiversity Heritage Library (42 publications) (from synonym Eleogenus capitatus (L.) Nees)
To Biodiversity Heritage Library (56 publications) (from synonym Scirpus caribaeus Rottb.)
To Biodiversity Heritage Library (57 publications) (from synonym Scirpus interstinctus Poepp. ex C.Presl)
To Biodiversity Heritage Library (6 publications) (from synonym Scirpus depressus Vell.)
To Biodiversity Heritage Library (602 publications) (from synonym Scirpus validus (Boeckeler) Kuntze)
To Biodiversity Heritage Library (74 publications) (from synonym Eleocharis caribaea (Rottb.) S.F.Blake)
To Biodiversity Heritage Library (8 publications) (from synonym Eleocharis riparia Nees ex Spreng.)
To Biodiversity Heritage Library (8 publications) (from synonym Chlorocharis capitata (L.) Rikli)
To Biodiversity Heritage Library (80 publications) (from synonym Scirpus geniculatus L.)
To Biodiversity Heritage Library (91 publications) (from synonym Cyperus capitatus (L.) Burm.f. ex B.D.Jacks.)
To European Nucleotide Archive, ENA (Cyperus capitatus) (from synonym Cyperus capitatus (L.) Burm.f. ex B.D.Jacks.)
To European Nucleotide Archive, ENA (Eleocharis geniculata) 
To GenBank (31 nucleotides; 17 proteins) 
To Genève Herbarium (Eleocharis melanosperma G00098359 isolectotype 1) (from synonym Eleocharis melanosperma Steud.)
To Genève Herbarium (Eleocharis melanosperma G00098360 isolectotype 1) (from synonym Eleocharis melanosperma Steud.)
To International Plant Names Index (IPNI) (from synonym Eleocharis dispar E.J.Hill)
To International Plant Names Index (IPNI) (from synonym Eleocharis densesquamata Steud.)
To International Plant Names Index (IPNI) (from synonym Eleocharis capitata (L.) R.Br.)
To International Plant Names Index (IPNI) (from synonym Eleocharis mexicana Peyr.)
To International Plant Names Index (IPNI) (from synonym Eleocharis riparia Nees ex Spreng.)
To International Plant Names Index (IPNI) (from synonym Eleocharis caribaea (Rottb.) S.F.Blake)
To International Plant Names Index (IPNI) (from synonym Eleocharis melanosperma Steud.)
To International Plant Names Index (IPNI) (from synonym Eleocharis setacea R.Br.)
To International Plant Names Index (IPNI) (from synonym Eleocharis singularis Steud.)
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Eleocharis capitata Miq.)
To International Plant Names Index (IPNI) (from synonym Cyperus capitatus (L.) Burm.f. ex B.D.Jacks.)
To International Plant Names Index (IPNI) (from synonym Eleocharis brizantha Steud.)
To International Plant Names Index (IPNI) (from synonym Chlorocharis capitata (L.) Rikli)
To International Plant Names Index (IPNI) (from synonym Chlorocharis geniculata (L.) Rikli)
To International Plant Names Index (IPNI) (from synonym Bulbostylis capitata (L.) Steven)
To International Plant Names Index (IPNI) (from synonym Bulbostylis geniculata (L.) Steven)
To International Plant Names Index (IPNI) (from synonym Scirpus depressus Vell.)
To International Plant Names Index (IPNI) (from synonym Scirpus geniculatus L.)
To International Plant Names Index (IPNI) (from synonym Scirpus validus (Boeckeler) Kuntze)
To International Plant Names Index (IPNI) (from synonym Trichophyllum capitatum (L.) House)
To International Plant Names Index (IPNI) (from synonym Scirpus interstinctus Poepp. ex C.Presl)
To International Plant Names Index (IPNI) (from synonym Scirpus repens Willd.)
To International Plant Names Index (IPNI) (from synonym Eleocharis kirkii C.B.Clarke)
To International Plant Names Index (IPNI) (from synonym Eleocharis caribaea var. achlamydea Zavaro & Pabón)
To International Plant Names Index (IPNI) (from synonym Eleocharis caribaea var. dispar (E.J.Hill) S.F.Blake)
To International Plant Names Index (IPNI) (from synonym Eleocharis capitata var. dispar (E.J.Hill) Fernald)
To International Plant Names Index (IPNI) (from synonym Eleogenus capitatus var. major Nees)
To International Plant Names Index (IPNI) (from synonym Eleogenus capitatus var. minor Nees)
To International Plant Names Index (IPNI) (from synonym Scirpus caribaeus Rottb.)
To International Plant Names Index (IPNI) (from synonym Scirpus constrictus Schrad. ex Kunth)
To International Plant Names Index (IPNI) (from synonym Scirpus brownii Spreng.)
To International Plant Names Index (IPNI) (from synonym Scirpus capitatus L.)
To International Plant Names Index (IPNI) (from synonym Megadenus capitatus (L.) Raf.)
To International Plant Names Index (IPNI) (from synonym Scirpus atrofactus Steud.)
To International Plant Names Index (IPNI) (from synonym Eleogenus capitatus (L.) Nees)
To International Plant Names Index (IPNI) (from synonym Limnochloa constricta (Schrad. ex Kunth) Nees)
To International Plant Names Index (IPNI) (from synonym Eleocharis sintenisii Boeckeler)
To International Plant Names Index (IPNI) (from synonym Eleocharis valida Boeckeler)
To International Plant Names Index (IPNI) (from synonym Limnochloa densa Liebm.)
To International Plant Names Index (IPNI) (from synonym Limnochloa geniculata (L.) Nees)
To International Plant Names Index (IPNI) (from synonym Eleocharis capitata var. typica Svenson)
To International Plant Names Index (IPNI) (from synonym Eleocharis geniculata f. brunnea S.González & Reznicek)
To International Plant Names Index (IPNI) (from synonym Eleocharis caribaea var. stokesii F.Br.)
To International Plant Names Index (IPNI) (from synonym Eleocharis geniculata var. minor (Vahl) Roem. & Schult.)
To International Plant Names Index (IPNI) (from synonym Scirpus geniculatus var. minor Vahl)
To International Plant Names Index (IPNI) (from synonym Eleogenus capitatus var. intermedius Nees)
To International Plant Names Index (IPNI) (from synonym Eleogenus capitatus var. recurvus Nees)
To IUCN Red List (Least Concern) 
To NHMUK collection (Eleocharis geniculata (L.) Roem. & Schult.; Lectotype; NHMUK:ecatalogue:623339) 
To Plants of the World Online 
To Plants of the World Online (from synonym Bulbostylis capitata (L.) Steven)
To Plants of the World Online (from synonym Chlorocharis capitata (L.) Rikli)
To Plants of the World Online (from synonym Bulbostylis geniculata (L.) Steven)
To Plants of the World Online (from synonym Chlorocharis geniculata (L.) Rikli)
To Plants of the World Online (from synonym Eleocharis capitata (L.) R.Br.)
To Plants of the World Online (from synonym Eleocharis brizantha Steud.)
To Plants of the World Online (from synonym Cyperus capitatus (L.) Burm.f. ex B.D.Jacks.)
To Plants of the World Online (from synonym Eleocharis singularis Steud.)
To Plants of the World Online (from synonym Eleocharis valida Boeckeler)
To Plants of the World Online (from synonym Eleocharis sintenisii Boeckeler)
To Plants of the World Online (from synonym Eleocharis riparia Nees ex Spreng.)
To Plants of the World Online (from synonym Eleocharis setacea R.Br.)
To Plants of the World Online (from synonym Eleocharis caribaea (Rottb.) S.F.Blake)
To Plants of the World Online (from synonym Eleocharis dispar E.J.Hill)
To Plants of the World Online (from synonym Eleocharis densesquamata Steud.)
To Plants of the World Online (from synonym Eleocharis melanosperma Steud.)
To Plants of the World Online (from synonym Eleocharis mexicana Peyr.)
To Plants of the World Online (from synonym Megadenus capitatus (L.) Raf.)
To Plants of the World Online (from synonym Limnochloa densa Liebm.)
To Plants of the World Online (from synonym Limnochloa geniculata (L.) Nees)
To Plants of the World Online (from synonym Eleogenus capitatus (L.) Nees)
To Plants of the World Online (from synonym Limnochloa constricta (Schrad. ex Kunth) Nees)
To Plants of the World Online (from synonym Scirpus brownii Spreng.)
To Plants of the World Online (from synonym Scirpus atrofactus Steud.)
To Plants of the World Online (from synonym Scirpus capitatus L.)
To Plants of the World Online (from synonym Scirpus depressus Vell.)
To Plants of the World Online (from synonym Scirpus constrictus Schrad. ex Kunth)
To Plants of the World Online (from synonym Scirpus caribaeus Rottb.)
To Plants of the World Online (from synonym Scirpus geniculatus var. minor Vahl)
To Plants of the World Online (from synonym Eleogenus capitatus var. minor Nees)
To Plants of the World Online (from synonym Eleocharis geniculata var. minor (Vahl) Roem. & Schult.)
To Plants of the World Online (from synonym Eleogenus capitatus var. major Nees)
To Plants of the World Online (from synonym Eleocharis capitata var. dispar (E.J.Hill) Fernald)
To Plants of the World Online (from synonym Eleocharis caribaea var. dispar (E.J.Hill) S.F.Blake)
To Plants of the World Online (from synonym Eleocharis caribaea var. achlamydea Zavaro & Pabón)
To Plants of the World Online (from synonym Eleocharis kirkii C.B.Clarke)
To Plants of the World Online (from synonym Scirpus validus (Boeckeler) Kuntze)
To Plants of the World Online (from synonym Trichophyllum capitatum (L.) House)
To Plants of the World Online (from synonym Scirpus geniculatus L.)
To Plants of the World Online (from synonym Scirpus interstinctus Poepp. ex C.Presl)
To Plants of the World Online (from synonym Scirpus repens Willd.)
To Plants of the World Online (from synonym Eleocharis capitata var. typica Svenson)
To Plants of the World Online (from synonym Eleogenus capitatus var. recurvus Nees)
To Plants of the World Online (from synonym Eleogenus capitatus var. intermedius Nees)
To Plants of the World Online (from synonym Eleocharis caribaea var. stokesii F.Br.)
To Plants of the World Online (from synonym Eleocharis geniculata f. brunnea S.González & Reznicek)
To Royal Botanic Garden Edinburgh Herbarium (Eleocharis capitata E00373615 type 1) (from synonym Eleocharis capitata (L.) R.Br.)
To Royal Botanic Gardens, Kew (Eleocharis geniculata K000416638 type 1) 
To The Plant List (from synonym Scirpus constrictus (Nees) Griseb.)
To The Plant List (from synonym Eleogenus capitatus (L.) Nees ex Mart.)
To The Plant List (from synonym Eleocharis capitata Miq.)
To The Plant List (from synonym Eleocharis geniculata f. geniculata (L.) Roem. & Schult.)
To US Herbarium (Eleocharis dispar US152241 type 1) (from synonym Eleocharis dispar E.J.Hill)
From editor or global species database
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