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Cyperaceae taxon details

Rhynchospora cephalantha A.Gray

To New York Botanical Garden Steere Herbarium (Rhynchospora_cephalantha_NY51374_type_1)
To New York Botanical Garden Steere Herbarium (Rhynchospora_cephalantha_NY51374_type_1)

1679526  (urn:lsid:marinespecies.org:taxname:1679526)

  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. Rhynchosporeae (Tribe)
  12. Rhynchospora (Genus)
  13. Rhynchospora cephalantha (Species)
accepted
Species

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terrestrial
Gray, M. D. (1835). A monograph of the North American species of Rhynchospora. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 190-219., available online at https://www.biodiversitylibrary.org/page/16077147#page/198/mode/1up
page(s): 218 [details] 
Holotype  P 00265361, geounit Cuba  
Holotype P 00265361, geounit Cuba [details]
Description Plants perennial, cespitose, 40–100(–150) cm; rhizomes absent. Culms arching, leafy, obscurely and convexly trigonous,...  
Description Plants perennial, cespitose, 40–100(–150) cm; rhizomes absent. Culms arching, leafy, obscurely and convexly trigonous, multi-ribbed, slender to stoutish. Principal leaves overtopped by culm; blades linear, flat proximally, 1.5–3 mm wide, apex tapering, trigonous. Inflorescences: spikelet clusters 3–several, widely spaced, often equidistant, mostly hemispheric to globose, occasionally lobed, 1–2 cm thick; bracteal leaves much exceeding subtended inflorescence. Spikelets dark red-brown to dark brown, lanceellipsoid to ellipsoid, 4–5(–6) mm, apex acute; fertile scales elliptic, 3–3.5(–4.5) mm, apex acute, midribs 3, laterals indistinct. Flowers: perianth bristles 6, reaching tubercle tip, retrorsely (rarely antrorsely) barbellate. Fruits 1(–2) per spikelet, 3.5–4(–4.2) mm; body brown with pale center, obovoid distal to stipe, lenticular, 2–2.3 × 1–1.5(–2) mm; tubercle triangular-subulate, (1–)1.5–2 mm, at least 0.5 mm wide at base. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 218 1835 to Ann. Lyceum Nat. Hist....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 218 1835 to Ann. Lyceum Nat. Hist. New York 3: 218 (1835), 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. Rhynchospora cephalantha A.Gray. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679526 on 2025-09-14
Date
action
by
2023-09-06 07:35:01Z
created
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin
2025-09-02 07:51:11Z
checked
Marco Rosado, Nuria

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


Nomenclature

original description Gray, M. D. (1835). A monograph of the North American species of Rhynchospora. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 190-219., available online at https://www.biodiversitylibrary.org/page/16077147#page/198/mode/1up
page(s): 218 [details] 

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

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Holotype P 00265361, geounit Cuba [details]
Syntype NY 00051374, geounit New Jersey [details]
From editor or global species database
Description Plants perennial, cespitose, 40–100(–150) cm; rhizomes absent. Culms arching, leafy, obscurely and convexly trigonous, multi-ribbed, slender to stoutish. Principal leaves overtopped by culm; blades linear, flat proximally, 1.5–3 mm wide, apex tapering, trigonous. Inflorescences: spikelet clusters 3–several, widely spaced, often equidistant, mostly hemispheric to globose, occasionally lobed, 1–2 cm thick; bracteal leaves much exceeding subtended inflorescence. Spikelets dark red-brown to dark brown, lanceellipsoid to ellipsoid, 4–5(–6) mm, apex acute; fertile scales elliptic, 3–3.5(–4.5) mm, apex acute, midribs 3, laterals indistinct. Flowers: perianth bristles 6, reaching tubercle tip, retrorsely (rarely antrorsely) barbellate. Fruits 1(–2) per spikelet, 3.5–4(–4.2) mm; body brown with pale center, obovoid distal to stipe, lenticular, 2–2.3 × 1–1.5(–2) mm; tubercle triangular-subulate, (1–)1.5–2 mm, at least 0.5 mm wide at base. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 3: 218 1835 to Ann. Lyceum Nat. Hist. New York 3: 218 (1835), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (20 publications) (from synonym Rhynchospora intermedia Beyr. ex Kunth)
To Biodiversity Heritage Library (3 publications) (from synonym Rhynchospora biceps Torr. ex A.Gray)
To Biodiversity Heritage Library (82 publications) 
To European Nucleotide Archive, ENA (Rhynchospora cephalantha) 
To European Nucleotide Archive, ENA (Rhynchospora intermedia) (from synonym Rhynchospora intermedia Beyr. ex Kunth)
To International Plant Names Index (IPNI) (from synonym Rhynchospora intermedia Beyr. ex Kunth)
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha var. attenuata Gale)
To International Plant Names Index (IPNI) (from synonym Rhynchospora biceps Torr. ex A.Gray)
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha var. luxurians Boeckeler)
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha var. pleiocephala Fernald & Gale)
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha var. typica Fernald & Gale)
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha f. antrorsa Gale)
To International Plant Names Index (IPNI) (from synonym Rhynchospora cephalantha f. controversa Gale)
To New York Botanical Garden Steere Herbarium (Rhynchospora_cephalantha_NY51374_type_1) 
To New York Botanical Garden Steere Herbarium (Rhynchospora_cephalantha_NY51375_type_1) (from synonym Rhynchospora cephalantha var. pleiocephala Fernald & Gale)
To Plants of the World Online (from synonym Rhynchospora cephalantha var. typica Fernald & Gale)
To Plants of the World Online (from synonym Rhynchospora cephalantha var. pleiocephala Fernald & Gale)
To Plants of the World Online (from synonym Rhynchospora cephalantha f. antrorsa Gale)
To Plants of the World Online (from synonym Rhynchospora cephalantha f. controversa Gale)
To Plants of the World Online (from synonym Rhynchospora biceps Torr. ex A.Gray)
To Plants of the World Online 
To Plants of the World Online (from synonym Rhynchospora intermedia Beyr. ex Kunth)
To Plants of the World Online (from synonym Rhynchospora cephalantha var. luxurians Boeckeler)
To Plants of the World Online (from synonym Rhynchospora cephalantha var. attenuata Gale)
To The Plant List (from synonym Rhynchospora cephalantha f. cephalantha A.Gray)
To The Plant List (from synonym Rhynchospora cephalantha var. cephalantha A.Gray)
To US Herbarium (Rhynchospora cephalantha antrorsa US1768177 type 1) (from synonym Rhynchospora cephalantha f. antrorsa Gale)
To US Herbarium (Rhynchospora cephalantha attenuata US1655538 type 1) (from synonym Rhynchospora cephalantha var. attenuata Gale)
To US Herbarium (Rhynchospora cephalantha attenuata US3151520 type 1) (from synonym Rhynchospora cephalantha var. attenuata Gale)
To US Herbarium (Rhynchospora cephalantha controversa US1837559 type 1) (from synonym Rhynchospora cephalantha f. controversa Gale)
To US Herbarium (Rhynchospora cephalantha pleiocephala US1810339 type 1) (from synonym Rhynchospora cephalantha var. pleiocephala Fernald & Gale)
From editor or global species database
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