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Cyperaceae taxon details

Carex pachystachya Cham. ex Steud.

To LE Herbarium (Carex pachystachya LE00010351 isotype 1)
To LE Herbarium (Carex pachystachya LE00010351 isotype 1)

1677872  (urn:lsid:marinespecies.org:taxname:1677872)

  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. Vignea (Subgenus)
  14. Carex sect. Cyperoideae (Section)
  15. Carex pachystachya (Species)
accepted
Species

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terrestrial
Steudel, E. G. (1855). Synopsis Plantarum Glumacearum. II. Cyperaceae. Metzler. Stuttgart. 246 pp., available online at https://www.biodiversitylibrary.org/page/44896084#page/138/mode/1up
page(s): 197 [details] 
Holotype  P 00306720, geounit Unalaska  
Holotype P 00306720, geounit Unalaska [details]
Description Plants densely cespitose. Culms 15–120 cm. Leaves: sheath white hyaline or green-veined, summits usually U-shaped, often...  
Description Plants densely cespitose. Culms 15–120 cm. Leaves: sheath white hyaline or green-veined, summits usually U-shaped, often prolonged to 4 mm beyond collar; distal ligules 1–2.5(–4) mm; blades 3–4(–5) per fertile culm, 10–30 cm × 1.2–4.2(–6.5) mm. Inflorescences dense or open, gold to dark brown, 0.9–2.8 cm × 6.7–16.3 mm; proximal internode 0.7–4.5(–9) mm; 2d internode 0.7–4 mm; proximal bracts usually scalelike, sometimes bristlelike, shorter than inflorescences. Spikes 3–9(–13), distinct or densely aggregated and individually indistinct, ovoid to broadly ovoid, 4.4–10 × 3.2–8.7 mm, appearing coarse-textured, base acute to rounded, apex rounded. Pistillate scales dark gold or red-brown to dark brown, usually with pale or green midstripe, ovate, 2.2–3.7(–4.2) mm, less than or equaling perigynia in length and width, margin white, 0–0.15 mm wide, apex obtuse to long-acute. Perigynia ascending to spreading, golden brown or coppery to blackish, conspicuously (0–)2–9-veined abaxially, conspicuously 0–4(–7)-veined adaxially, veins reaching top of achene, ovate to elliptic-ovate, plano-convex, 2.8–4.7(–5.1) × 1.1–2.3 mm, 0.5–0.7 mm thick, margin flat, including wing 0.2–0.4 mm wide, sometimes filled with pithlike tissue near base, ciliate-serrulate at least on distal body, occasionally with white margin, with metallic sheen; beak red-brown to black at tip, sometimes white-hyaline, cylindric, unwinged, ± entire for 0.4–0.7 mm, suture usually inconspicuous, distance from beak tip to achene 1.5–2.2(–2.8) mm. Achenes elliptic to broadly ovate, 1.2–1.9 × 0.7–1.4 mm, 0.4–0.6 mm thick. 2n = 74.
 [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syn. Pl. Glumac. 2: 197 1855 to Syn. Pl. Glumac. 2: 197 (1855),...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syn. Pl. Glumac. 2: 197 1855 to Syn. Pl. Glumac. 2: 197 (1855), 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. Carex pachystachya Cham. ex Steud.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677872 on 2025-09-12
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 Steudel, E. G. (1855). Synopsis Plantarum Glumacearum. II. Cyperaceae. Metzler. Stuttgart. 246 pp., available online at https://www.biodiversitylibrary.org/page/44896084#page/138/mode/1up
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 
   

Holotype P 00306720, geounit Unalaska [details]
Isotype LE 00010351, geounit Unalaska [details]
From editor or global species database
Description Plants densely cespitose. Culms 15–120 cm. Leaves: sheath white hyaline or green-veined, summits usually U-shaped, often prolonged to 4 mm beyond collar; distal ligules 1–2.5(–4) mm; blades 3–4(–5) per fertile culm, 10–30 cm × 1.2–4.2(–6.5) mm. Inflorescences dense or open, gold to dark brown, 0.9–2.8 cm × 6.7–16.3 mm; proximal internode 0.7–4.5(–9) mm; 2d internode 0.7–4 mm; proximal bracts usually scalelike, sometimes bristlelike, shorter than inflorescences. Spikes 3–9(–13), distinct or densely aggregated and individually indistinct, ovoid to broadly ovoid, 4.4–10 × 3.2–8.7 mm, appearing coarse-textured, base acute to rounded, apex rounded. Pistillate scales dark gold or red-brown to dark brown, usually with pale or green midstripe, ovate, 2.2–3.7(–4.2) mm, less than or equaling perigynia in length and width, margin white, 0–0.15 mm wide, apex obtuse to long-acute. Perigynia ascending to spreading, golden brown or coppery to blackish, conspicuously (0–)2–9-veined abaxially, conspicuously 0–4(–7)-veined adaxially, veins reaching top of achene, ovate to elliptic-ovate, plano-convex, 2.8–4.7(–5.1) × 1.1–2.3 mm, 0.5–0.7 mm thick, margin flat, including wing 0.2–0.4 mm wide, sometimes filled with pithlike tissue near base, ciliate-serrulate at least on distal body, occasionally with white margin, with metallic sheen; beak red-brown to black at tip, sometimes white-hyaline, cylindric, unwinged, ± entire for 0.4–0.7 mm, suture usually inconspicuous, distance from beak tip to achene 1.5–2.2(–2.8) mm. Achenes elliptic to broadly ovate, 1.2–1.9 × 0.7–1.4 mm, 0.4–0.6 mm thick. 2n = 74.
 [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syn. Pl. Glumac. 2: 197 1855 to Syn. Pl. Glumac. 2: 197 (1855), 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 Carex pachystachya var. monds-coulteri Kelso)
To Biodiversity Heritage Library (2 publications) (from synonym Carex macloviana var. pachystachya (Cham. ex Steud.) Kük.)
To Biodiversity Heritage Library (82 publications) 
To European Nucleotide Archive, ENA (Carex pachystachya) 
To GenBank (40 nucleotides; 11 proteins) 
To International Plant Names Index (IPNI) (from synonym Carex macloviana var. pachystachya (Cham. ex Steud.) Kük.)
To International Plant Names Index (IPNI) (from synonym Carex macloviana subsp. pachystachya (Cham. ex Steud.) Hultén)
To International Plant Names Index (IPNI) (from synonym Carex festiva var. pachystachya (Cham. ex Steud.) L.H.Bailey)
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Carex pachystachya var. monds-coulteri Kelso)
To International Plant Names Index (IPNI) (from synonym Carex pachystachya f. monds-coulteri (Kelso) F.J.Herm.)
To LE Herbarium (Carex pachystachya LE00010351 isotype 1) 
To LE Herbarium (Carex pachystachya LE00010352 isotype 1) 
To LE Herbarium (Carex pachystachya LE00010353 isotype 1) 
To Plants of the World Online (from synonym Carex macloviana subsp. pachystachya (Cham. ex Steud.) Hultén)
To Plants of the World Online 
To Plants of the World Online (from synonym Carex macloviana var. pachystachya (Cham. ex Steud.) Kük.)
To Plants of the World Online (from synonym Carex festiva var. pachystachya (Cham. ex Steud.) L.H.Bailey)
To Plants of the World Online (from synonym Carex pachystachya var. monds-coulteri Kelso)
To Plants of the World Online (from synonym Carex pachystachya f. monds-coulteri (Kelso) F.J.Herm.)
To US Herbarium (Carex pachystachya US224863 type 1) 
From editor or global species database
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