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Cyperaceae taxon details

Carex thurberi Dewey ex Torr.

1676193 (urn:lsid:marinespecies.org:taxname:1676193)

accepted
Species
terrestrial
Emory, W. H. (1859). Report on the United States and Mexican Boundary Survey, Made Under the Direction of the Secretary of the Interior. 2(1)., available online at https://www.biodiversitylibrary.org/page/28872815#page/232/mode/1up
page(s): 232 [details] 
Holotype  GH 00027459, geounit Mexico  
Holotype GH 00027459, geounit Mexico [details]
Description Plants densely to loosely cespitose; rhizomes short, no more than 10 cm. Culms trigonous in cross section, 40–100 cm,...  
Description Plants densely to loosely cespitose; rhizomes short, no more than 10 cm. Culms trigonous in cross section, 40–100 cm, scabrous-angled distally. Leaves: basal sheaths reddish purple; ligules longer than wide; blades pale to mid green, flat to W-shaped, 3.5–9 mm wide, glabrous. Inflorescences 6–25 cm; proximal bract 15–40 cm, exceeding inflorescence; proximal 3–4 spikes pistillate, erect or the proximal spreading; terminal 1–2 spikes staminate. Pistillate scales ovate, obtuse to acuminate, 2–4.4(–5.1) × 0.7–1.3 mm, shorter than perigynia, margins erose, apex contracted, scabrous-awned, awn mostly shorter than body. Staminate scales scabrous-awned, sometimes also ciliate-margined. Perigynia ascending, ca. 13–25-veined, veins separated by 3+ times their width, confluent at or proximal to mid beak (except for 2 prominent lateral), narrowly elliptic, 3.1–4.8 × 0.9–1.5(–1.8) mm, herbaceous, apex tapered; beak 0.9–1.8 mm, smooth, bidentulate, teeth straight, 0.4–0.9 mm. Stigmas 3. Achenes yellow to pale brown, trigonous, smooth. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rep. U.S. Mex. Bound., Bot. [Emory] 232. 1859 to Rep. U.S. Mex....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rep. U.S. Mex. Bound., Bot. [Emory] 232. 1859 to Rep. U.S. Mex. Bound. 2(1): 232 (1858), 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 thurberi Dewey ex Torr.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676193 on 2026-08-29
Date
action
by
2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed

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Nomenclature

original description Emory, W. H. (1859). Report on the United States and Mexican Boundary Survey, Made Under the Direction of the Secretary of the Interior. 2(1)., available online at https://www.biodiversitylibrary.org/page/28872815#page/232/mode/1up
page(s): 232 [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 GH 00027459, geounit Mexico [details]
Syntype (of Carex arizonensis Kük.) P 00302782, geounit Arizona [details]
From editor or global species database
Description Plants densely to loosely cespitose; rhizomes short, no more than 10 cm. Culms trigonous in cross section, 40–100 cm, scabrous-angled distally. Leaves: basal sheaths reddish purple; ligules longer than wide; blades pale to mid green, flat to W-shaped, 3.5–9 mm wide, glabrous. Inflorescences 6–25 cm; proximal bract 15–40 cm, exceeding inflorescence; proximal 3–4 spikes pistillate, erect or the proximal spreading; terminal 1–2 spikes staminate. Pistillate scales ovate, obtuse to acuminate, 2–4.4(–5.1) × 0.7–1.3 mm, shorter than perigynia, margins erose, apex contracted, scabrous-awned, awn mostly shorter than body. Staminate scales scabrous-awned, sometimes also ciliate-margined. Perigynia ascending, ca. 13–25-veined, veins separated by 3+ times their width, confluent at or proximal to mid beak (except for 2 prominent lateral), narrowly elliptic, 3.1–4.8 × 0.9–1.5(–1.8) mm, herbaceous, apex tapered; beak 0.9–1.8 mm, smooth, bidentulate, teeth straight, 0.4–0.9 mm. Stigmas 3. Achenes yellow to pale brown, trigonous, smooth. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rep. U.S. Mex. Bound., Bot. [Emory] 232. 1859 to Rep. U.S. Mex. Bound. 2(1): 232 (1858), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
    Definitions

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