svg-backdrop

Cyperaceae taxon details

Rhynchospora perplexa Britton

To New York Botanical Garden Steere Herbarium (Rhynchospora_perplexa_NY51418_type_1)
To New York Botanical Garden Steere Herbarium (Rhynchospora_perplexa_NY51418_type_1)

1681184  (urn:lsid:marinespecies.org:taxname:1681184)

  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 perplexa (Species)
accepted
Species

Ordering

  • Alphabetically
  • By status

Children Display

terrestrial
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): 197 [details] 
Lectotype  NY 00051419, geounit Florida  
Lectotype NY 00051419, geounit Florida [details]
Description Plants perennial, cespitose, 50–110 cm; rhizomes absent. Culms lax, often excurved, slender, ± te-rete or trigonous....  
Description Plants perennial, cespitose, 50–110 cm; rhizomes absent. Culms lax, often excurved, slender, ± te-rete or trigonous. Leaves ascending, exceeded by culm; blades linear, proximally flat, 1.5–2.5 mm wide, apex trigonous, subulate, tapering. Inflorescences: clusters 3–4, widely spaced, narrowly, compactly, or diffusely turbinate; leafy bracts exceeding proximal clusters. Spikelets deep red brown, ovoid to broadly ellipsoid, 2–3 mm, apex acute to acuminate; fertile scales broadly elliptic to obovate or orbiculate, 1.4–2(–2.5) mm, apex rounded to notched, midrib short excurrent. Flowers: perianth bristles 0–3, vestigial when present. Fruits 2–4 per spikelet, 1.5 mm; body pale brown to brown, strongly flattened, orbicular to broadly obovoid, 1–1.3 × 0.9–1.2 mm, surfaces sharply transversely wavy rugose, intervals finely vertically striate with rows of linear rectangular alveolae; tubercle depressed, triangular, flattened, 0.2–0.3 mm, base lunate. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. S.E. U.S. 197 1903 to Fl. S.E. U.S. : 197 (1903), information...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. S.E. U.S. 197 1903 to Fl. S.E. U.S. : 197 (1903), 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 perplexa Britton. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681184 on 2025-09-12
Date
action
by
2023-09-06 07:35:01Z
created
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin
2025-09-08 08:02:58Z
checked
Marco Rosado, Nuria

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


Nomenclature

original description 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): 197 [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 
   

Lectotype NY 00051419, geounit Florida [details]
Syntype NY 00051418, geounit Florida [details]
From editor or global species database
Description Plants perennial, cespitose, 50–110 cm; rhizomes absent. Culms lax, often excurved, slender, ± te-rete or trigonous. Leaves ascending, exceeded by culm; blades linear, proximally flat, 1.5–2.5 mm wide, apex trigonous, subulate, tapering. Inflorescences: clusters 3–4, widely spaced, narrowly, compactly, or diffusely turbinate; leafy bracts exceeding proximal clusters. Spikelets deep red brown, ovoid to broadly ellipsoid, 2–3 mm, apex acute to acuminate; fertile scales broadly elliptic to obovate or orbiculate, 1.4–2(–2.5) mm, apex rounded to notched, midrib short excurrent. Flowers: perianth bristles 0–3, vestigial when present. Fruits 2–4 per spikelet, 1.5 mm; body pale brown to brown, strongly flattened, orbicular to broadly obovoid, 1–1.3 × 0.9–1.2 mm, surfaces sharply transversely wavy rugose, intervals finely vertically striate with rows of linear rectangular alveolae; tubercle depressed, triangular, flattened, 0.2–0.3 mm, base lunate. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. S.E. U.S. 197 1903 to Fl. S.E. U.S. : 197 (1903), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Phaeocephalum perplexum (Britton) House)
To Biodiversity Heritage Library (23 publications) 
To European Nucleotide Archive, ENA (Rhynchospora perplexa) 
To Genbank 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Phaeocephalum perplexum (Britton) House)
To International Plant Names Index (IPNI) (from synonym Rhynchospora microcarpa var. perplexa (Britton) Kük.)
To International Plant Names Index (IPNI) (from synonym Rhynchospora perplexa var. virginiana Fernald)
To New York Botanical Garden Steere Herbarium (Rhynchospora_perplexa_NY51418_type_1) 
To New York Botanical Garden Steere Herbarium (Rhynchospora_perplexa_NY51419_lectotype_1) 
To Plants of the World Online 
To Plants of the World Online (from synonym Rhynchospora perplexa var. virginiana Fernald)
To Plants of the World Online (from synonym Phaeocephalum perplexum (Britton) House)
To Plants of the World Online (from synonym Rhynchospora microcarpa var. perplexa (Britton) Kük.)
To Royal Botanic Gardens, Kew (Rhynchospora perplexa K001057279 type 1) 
To The Plant List (from synonym Rhynchospora perplexa var. perplexa Britton)
To US Herbarium (Rhynchospora perplexa virginiana US2003604 type 1) (from synonym Rhynchospora perplexa var. virginiana Fernald)
From editor or global species database
logo tettris logo european union logo goverment spain
This project has received funding from the European Union’s Horizon Europe Research and Innovation program within the framework of the TETTRIs Project funded under Grant Agreement Nr 101081903.
Website hosted & developed by VLIZ · contact: WoRMS team