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Cyperaceae taxon details

Rhynchospora floridensis (Britton ex Small) H.Pfeiff.

To Field Museum Herbarium (Dichromena floridensis Small F144391 isotype 1)
To Field Museum Herbarium (Dichromena floridensis Small F144391 isotype 1)

1679594  (urn:lsid:marinespecies.org:taxname:1679594)

  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 floridensis (Species)
accepted
Species
terrestrial
(of Dichromena floridensis Britton ex Small) Small, J. K. (1903). Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolin, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana and the Indian territory and in Oklahoma and Texas east of the one-hundredth meridian. , available online at https://www.biodiversitylibrary.org/page/376878
page(s): 190 [details] 
Holotype  (of Dichromena floridensis Britton ex Small)...  
Holotype (of Dichromena floridensis Britton ex Small) NY 00011824, geounit Florida [details]
Description Plants perennial, cespitose, 20–50 cm, wiry; rhizomes absent. Culms erect to spreading, leafybased; scapes nearly filiform,...  
Description Plants perennial, cespitose, 20–50 cm, wiry; rhizomes absent. Culms erect to spreading, leafybased; scapes nearly filiform, nearly trigonous, few ribbed. Leaves spreading to erect, exceeded by scape; blades filiform to linear, proximally flat or involute, becoming involute, 0.4–2 mm wide, apex tapering, trigonous. Inflorescences terminal, solitary, headlike, dense, white, leafyinvolucrate, 0.5–1 cm wide; involucral bracts 3–6, spreading to recurved, whitebased, greentipped, narrowly linear, longest bract elongatesubulate, 4–8 cm × 2–5 mm. Spikelets white, ovoid, 4–6 mm; scales several, boatshaped, basal ones with ciliolate keel, fertile ones 3–3.8 mm. Flowers: perianth absent. Fruits 1–1.2 mm; body yellow to black, nearly orbicular, tumidly lenticular, 0.8–1 × 0.6–0.7(–1) mm; surface lattices shortlinear, vertical in fine undulating rows, with ends raised to rounded, transverse rugulosities; tubercle lowtriangular, lunate, 0.2–0.3 mm, apex acute, blunt or apiculate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Britton ex Small) H.Pfeiff. to (C.B.Clarke) H.Pfeiff.,...  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Britton ex Small) H.Pfeiff. to (C.B.Clarke) H.Pfeiff., information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora floridensis (Britton ex Small) H.Pfeiff.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679594 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
2025-09-03 11:03:03Z
checked
Marco Rosado, Nuria

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


Nomenclature

original description (of Dichromena floridensis Britton ex Small) Small, J. K. (1903). Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolin, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana and the Indian territory and in Oklahoma and Texas east of the one-hundredth meridian. , available online at https://www.biodiversitylibrary.org/page/376878
page(s): 190 [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 (of Dichromena floridensis Britton ex Small) NY 00011824, geounit Florida [details]
Isotype (of Dichromena floridensis Britton ex Small) F 0045514, geounit Florida [details]
From editor or global species database
Description Plants perennial, cespitose, 20–50 cm, wiry; rhizomes absent. Culms erect to spreading, leafybased; scapes nearly filiform, nearly trigonous, few ribbed. Leaves spreading to erect, exceeded by scape; blades filiform to linear, proximally flat or involute, becoming involute, 0.4–2 mm wide, apex tapering, trigonous. Inflorescences terminal, solitary, headlike, dense, white, leafyinvolucrate, 0.5–1 cm wide; involucral bracts 3–6, spreading to recurved, whitebased, greentipped, narrowly linear, longest bract elongatesubulate, 4–8 cm × 2–5 mm. Spikelets white, ovoid, 4–6 mm; scales several, boatshaped, basal ones with ciliolate keel, fertile ones 3–3.8 mm. Flowers: perianth absent. Fruits 1–1.2 mm; body yellow to black, nearly orbicular, tumidly lenticular, 0.8–1 × 0.6–0.7(–1) mm; surface lattices shortlinear, vertical in fine undulating rows, with ends raised to rounded, transverse rugulosities; tubercle lowtriangular, lunate, 0.2–0.3 mm, apex acute, blunt or apiculate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Britton ex Small) H.Pfeiff. to (C.B.Clarke) H.Pfeiff., information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
To Biodiversity Heritage Library (5 publications) 
To Biodiversity Heritage Library (6 publications) (from synonym Dichromena inaguensis Britton)
To Biodiversity Heritage Library (8 publications) (from synonym Dichromena floridensis C.B.Clarke)
To Biodiversity Heritage Library (8 publications) (from synonym Dichromena floridensis Britton ex Small)
To European Nucleotide Archive, ENA (Rhynchospora floridensis) 
To Field Museum Herbarium (Dichromena floridensis Small F144391 isotype 1) (from synonym Dichromena floridensis Britton ex Small)
To Field Museum Herbarium (Dichromena inaguensis Britton F171575 isotype 1) (from synonym Dichromena inaguensis Britton)
To GenBank (5 nucleotides; 4 proteins) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Dichromena inaguensis Britton)
To International Plant Names Index (IPNI) (from synonym Dichromena floridensis Britton ex Small)
To International Plant Names Index (IPNI) (from synonym Dichromena floridensis C.B.Clarke)
To International Plant Names Index (IPNI) (from synonym Rhynchospora stellata f. floridensis (Britton ex Small) Kük.)
To New York Botanical Garden Steere Herbarium (Dichromena_inaguensis_NY11834_holotype_1) (from synonym Dichromena inaguensis Britton)
To New York Botanical Garden Steere Herbarium (Rhynchospora_floridensis_NY11824_holotype_1) 
To New York Botanical Garden Steere Herbarium (Rhynchospora_floridensis_NY11845_holotype_1) 
To Plants of the World Online 
To Plants of the World Online (from synonym Dichromena floridensis Britton ex Small)
To Plants of the World Online (from synonym Dichromena inaguensis Britton)
To Plants of the World Online (from synonym Rhynchospora stellata f. floridensis (Britton ex Small) Kük.)
To The Plant List (from synonym Dichromena floridensis C.B.Clarke)
To US Herbarium (Dichromena floridensis US2053886 type 1) (from synonym Dichromena floridensis Britton ex Small)
To US Herbarium (Dichromena inaguensis US429867 type 1) (from synonym Dichromena inaguensis Britton)
From editor or global species database
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