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Cyperaceae taxon details

Cyperus squarrosus L.

To New York Botanical Garden Steere Herbarium (Cyperus_aristatus_NY11628_type_1)
To New York Botanical Garden Steere Herbarium (Cyperus_aristatus_NY11628_type_1)

1679103  (urn:lsid:marinespecies.org:taxname:1679103)

  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. Cypereae (Tribe)
  12. Cyperinae (Subtribe)
  13. Cyperus (Genus)
  14. Cyperus squarrosus (Species)
accepted
Species

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terrestrial
Not documented
Description Herbs, annual, cespitose, with fibrous roots. Culms 1–20, trigonous, 2–16 cm × 0.5–0.8 mm, glabrous. Leaves 1–3,...  
Description Herbs, annual, cespitose, with fibrous roots. Culms 1–20, trigonous, 2–16 cm × 0.5–0.8 mm, glabrous. Leaves 1–3, flat to V-shaped, (1–)5–10(–15) × 0.5–2.5 mm. Inflorescences: spike 1, loosely to densely ovoid to oblong, 6–20(–40) × 9–15(–20) mm; rays absent or 1–3(–6), 4–40 mm; bracts (1–)2–4, longest ± erect, V-shaped, 1–15 cm × 0.5–3 mm; rachilla ± deciduous, wingless. Spikelets (2–)6–20(–40), greenish to reddish brown, somewhat compressed, ovoid-lanceoloid to oblong, 2.5–10(–20) × 1.3–2.2 mm (excluding awns); floral scales deciduous, (4–)10–20(–34), greenish to stramineous or brownish red laterally, greenish medially, (5–)7–9(–11)-ribbed nearly to margins, oblong-lanceolate, (1.2–)1.3–1.8(–2.2) × (0.5–)0.7–0.8(–1) mm, apex cuspidate, excurved awn additional 0.5–1(–1.3) mm. Flowers: stamen 1, filaments 1.5 mm; anthers oblong, 0.2–0.3 mm, connective apex reddish, minute; styles 0.3–0.5 mm; stigmas 0.4–0.7 mm. Achenes light brown to nearly black, stipitate, obovoid (occasionally linear-spatulate or linear oblong, infrequently constricted in middle), 0.7–0.8(–1.1) × (0.2–)0.3–0.4(–0.5) mm, stipe 0.05–0.1 × 0.1 mm, apex truncate, apiculate, surfaces papillose. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Cent. Pl. II 6 1756 to Cent. Pl. II : 6 (1756), information provided...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Cent. Pl. II 6 1756 to Cent. Pl. II : 6 (1756), information provided by Alan E. on email Jun. 07 2021 More details could be found in The P [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Cyperus squarrosus L.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679103 on 2025-12-24
Date
action
by
2023-09-06 07:35:01Z
created
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
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Nomenclature

original description (of Cyperus uncinatus 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): 215 [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 Herbs, annual, cespitose, with fibrous roots. Culms 1–20, trigonous, 2–16 cm × 0.5–0.8 mm, glabrous. Leaves 1–3, flat to V-shaped, (1–)5–10(–15) × 0.5–2.5 mm. Inflorescences: spike 1, loosely to densely ovoid to oblong, 6–20(–40) × 9–15(–20) mm; rays absent or 1–3(–6), 4–40 mm; bracts (1–)2–4, longest ± erect, V-shaped, 1–15 cm × 0.5–3 mm; rachilla ± deciduous, wingless. Spikelets (2–)6–20(–40), greenish to reddish brown, somewhat compressed, ovoid-lanceoloid to oblong, 2.5–10(–20) × 1.3–2.2 mm (excluding awns); floral scales deciduous, (4–)10–20(–34), greenish to stramineous or brownish red laterally, greenish medially, (5–)7–9(–11)-ribbed nearly to margins, oblong-lanceolate, (1.2–)1.3–1.8(–2.2) × (0.5–)0.7–0.8(–1) mm, apex cuspidate, excurved awn additional 0.5–1(–1.3) mm. Flowers: stamen 1, filaments 1.5 mm; anthers oblong, 0.2–0.3 mm, connective apex reddish, minute; styles 0.3–0.5 mm; stigmas 0.4–0.7 mm. Achenes light brown to nearly black, stipitate, obovoid (occasionally linear-spatulate or linear oblong, infrequently constricted in middle), 0.7–0.8(–1.1) × (0.2–)0.3–0.4(–0.5) mm, stipe 0.05–0.1 × 0.1 mm, apex truncate, apiculate, surfaces papillose. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Cent. Pl. II 6 1756 to Cent. Pl. II : 6 (1756), information provided by Alan E. on email Jun. 07 2021 More details could be found in The P [details]
    Definitions

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To Biodiversity Heritage Library (1 publication) (from synonym Dichostylis aristatus (Rottb.) Palla)
To Biodiversity Heritage Library (1 publication) (from synonym Mariscus intricatus (L.) Cufod.)
To Biodiversity Heritage Library (132 publications) 
To Biodiversity Heritage Library (29 publications) (from synonym Mariscus squarrosus (L.) C.B.Clarke)
To Biodiversity Heritage Library (8 publications) (from synonym Pycreus squarrosus (L.) Nees)
To Biodiversity Heritage Library (88 publications) (from synonym Cyperus uncinatus R.Br.)
To European Nucleotide Archive, ENA (Cyperus squarrosus) 
To GenBank (13 nucleotides; 7 proteins) (from synonym Mariscus squarrosus (L.) C.B.Clarke)
To International Plant Names Index (IPNI) (from synonym Pycreus squarrosus (L.) Nees)
To International Plant Names Index (IPNI) (from synonym Cyperus aristatus var. runyonii O'Neill)
To International Plant Names Index (IPNI) (from synonym Cyperus squarrosus var. runyonii (O'Neill) S.D.Jones & Wipff)
To International Plant Names Index (IPNI) (from synonym Cyperus uncinatus R.Br.)
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Dichostylis squarrosa (L.) Palla)
To International Plant Names Index (IPNI) (from synonym Mariscus intricatus (L.) Cufod.)
To International Plant Names Index (IPNI) (from synonym Mariscus squarrosus (L.) C.B.Clarke)
To IUCN Red List (Least Concern) 
To New York Botanical Garden Steere Herbarium (Cyperus_aristatus_NY11628_type_1) (from synonym Cyperus aristatus var. runyonii O'Neill)
To Plants of the World Online (from synonym Cyperus squarrosus var. runyonii (O'Neill) S.D.Jones & Wipff)
To Plants of the World Online (from synonym Cyperus aristatus var. runyonii O'Neill)
To Plants of the World Online (from synonym Pycreus squarrosus (L.) Nees)
To Plants of the World Online 
To Plants of the World Online (from synonym Cyperus uncinatus R.Br.)
To Plants of the World Online (from synonym Mariscus squarrosus (L.) C.B.Clarke)
To Plants of the World Online (from synonym Mariscus intricatus (L.) Cufod.)
To Plants of the World Online (from synonym Dichostylis squarrosa (L.) Palla)
To The Plant List (from synonym Dichostylis aristatus (Rottb.) Palla)
To US Herbarium (Cyperus aristatus runyonii US3168283 type 1) (from synonym Cyperus aristatus var. runyonii O'Neill)
From editor or global species database
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