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Cyperaceae taxon details

Carex helleri Mack.

To Field Museum Herbarium (Carex helleri Mack. F283119 isotype 1)
To Field Museum Herbarium (Carex helleri Mack. F283119 isotype 1)

1676374  (urn:lsid:marinespecies.org:taxname:1676374)

  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. Cariceae (Tribe)
  12. Carex (Genus)
  13. Carex subg. Carex (Subgenus)
  14. Carex sect. Racemosae (Section)
  15. Carex helleri (Species)
accepted
Species
terrestrial
Mackenzie, K. K. (1922). A monograph of the California species of the genus Carex. <em>Erythea.</em> 8: 7-95., available online at https://archive.org/details/erytheajournalof08jeps/page/95/mode/1up
page(s): 70 [details] 
Description Plants densely cespitose. Culms 5–30 cm, proximally scabrous. Leaves 2–3 mm wide. Inflorescences: proximal bracts...  
Description Plants densely cespitose. Culms 5–30 cm, proximally scabrous. Leaves 2–3 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, erect, elongate, sessile or short-pendunculate, contiguous, forming dense terminal cluster or separate, 10–20 × 5–7 mm; lateral 2–3 spikes pistillate; terminal spike gynecandrous. Pistillate scales dark brown or black to margins, lanceolate, 1–2 times as long as and narrower than perigynia, midvein lighter colored than body, conspicuous, frequently raised, prominent, apex acute or acuminate, mucronate. Perigynia ascending, dark brown or purple-black with green or yellowish brown margins, veinless, elliptic or obovate, 2.5–3 × 2–3 mm, apex gradually or abruptly beaked, distal margins smooth; beak 0.25–0.3 mm, bidentate, smooth. Achenes filling proximal 1/2 or less of perigynia. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 70 1922 to Erythea 8: 70 (1922), information provided by...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 70 1922 to Erythea 8: 70 (1922), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Plant [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex helleri Mack.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676374 on 2025-09-14
Date
action
by
2023-09-06 07:28:28Z
created
Jiménez-Mejías, Pedro
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed
Márquez-Corro, José Ignacio

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


Nomenclature

original description Mackenzie, K. K. (1922). A monograph of the California species of the genus Carex. <em>Erythea.</em> 8: 7-95., available online at https://archive.org/details/erytheajournalof08jeps/page/95/mode/1up
page(s): 70 [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 
   

Isotype F 0045403, geounit Nevada [details]
From editor or global species database
Description Plants densely cespitose. Culms 5–30 cm, proximally scabrous. Leaves 2–3 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, erect, elongate, sessile or short-pendunculate, contiguous, forming dense terminal cluster or separate, 10–20 × 5–7 mm; lateral 2–3 spikes pistillate; terminal spike gynecandrous. Pistillate scales dark brown or black to margins, lanceolate, 1–2 times as long as and narrower than perigynia, midvein lighter colored than body, conspicuous, frequently raised, prominent, apex acute or acuminate, mucronate. Perigynia ascending, dark brown or purple-black with green or yellowish brown margins, veinless, elliptic or obovate, 2.5–3 × 2–3 mm, apex gradually or abruptly beaked, distal margins smooth; beak 0.25–0.3 mm, bidentate, smooth. Achenes filling proximal 1/2 or less of perigynia. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 70 1922 to Erythea 8: 70 (1922), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Plant [details]
To Biodiversity Heritage Library (11 publications) 
To Biodiversity Heritage Library (6 publications) (from synonym Carex atrata var. nigra (All.) W.Boott)
To European Nucleotide Archive, ENA (Carex helleri) 
To Field Museum Herbarium (Carex helleri Mack. F283119 isotype 1) 
To GenBank (11 nucleotides; 2 proteins) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Carex atrata var. nigra (All.) W.Boott)
To New York Botanical Garden Steere Herbarium (Carex_helleri_NY11145_type_1) 
To Plants of the World Online 
To Royal Botanic Gardens, Kew (Carex helleri K001079027 type 1) 
To The Plant List (from synonym Carex atrata var. nigra (All.) W.Boott)
To US Herbarium (Carex helleri US508916 type 1) 
To US Herbarium (Carex helleri US509004 type 1) 
From editor or global species database
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