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Cyperaceae taxon details

Carex stevenii (Holm) Kalela

1676068  (urn:lsid:marinespecies.org:taxname:1676068)

accepted
Species
terrestrial
(of Carex alpina var. stevenii Holm) Holm, T. (1903). Studies in the Cyperaceae. XIX. The genus Carex in Colorado. American Journal of Science, 16: 17-44., available online at https://ajsonline.org/article/126376.pdf
page(s): 21. 27 [details] 
Description Plants loosely cespitose. Culms 15–60 cm, distally finely scabrous. Leaves 3–4 mm wide. Inflorescences: proximal bracts...  
Description Plants loosely cespitose. Culms 15–60 cm, distally finely scabrous. Leaves 3–4 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, distinct, contiguous, short-oblong or cylindric, 5–15 × 3–4.5 mm; lateral 2–3 spikes pistillate; proximal spikes separate, erect, short-pendunculate; distal lateral contiguous or separate, not forming dense terminal cluster, of similar length; terminal spike gynecandrous. Pistillate scales dark brown to black, margins hyaline, ovate, shorter than and as broad as perigynia, midvein same color as body, inconspicuous. Perigynia ascending, green becoming dark brown or purple-black, veinless, elliptic, 2–2.5 × 1.25–1.5 mm, frequently serrulate, apex abruptly or gradually beaked, smooth or distal margins sparsely papillose; beak 0.2–0.3 mm, shallowly bidentate, serrulate or smooth. Achenes nearly filling body of perigynia. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19(3): 11 1944 to Ann. Bot....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19(3): 11 1944 to Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19(3): 11 (1944), information provided by Alan E. on email Jun. 07 2021 More details could be found  [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex stevenii (Holm) Kalela. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676068 on 2025-09-14
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 (of Carex alpina var. stevenii Holm) Holm, T. (1903). Studies in the Cyperaceae. XIX. The genus Carex in Colorado. American Journal of Science, 16: 17-44., available online at https://ajsonline.org/article/126376.pdf
page(s): 21. 27 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Kakela, A. (1944). <em>Annales Botanici Societatis Zoologicae-Botanicae Fennicae Vanamo.</em> 19(3).
page(s): 11 [details] 

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Isolectotype (of Carex alpina var. stevenii Holm) US 00050642, geounit Colorado [details]
From editor or global species database
Description Plants loosely cespitose. Culms 15–60 cm, distally finely scabrous. Leaves 3–4 mm wide. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes overlapping, distinct, contiguous, short-oblong or cylindric, 5–15 × 3–4.5 mm; lateral 2–3 spikes pistillate; proximal spikes separate, erect, short-pendunculate; distal lateral contiguous or separate, not forming dense terminal cluster, of similar length; terminal spike gynecandrous. Pistillate scales dark brown to black, margins hyaline, ovate, shorter than and as broad as perigynia, midvein same color as body, inconspicuous. Perigynia ascending, green becoming dark brown or purple-black, veinless, elliptic, 2–2.5 × 1.25–1.5 mm, frequently serrulate, apex abruptly or gradually beaked, smooth or distal margins sparsely papillose; beak 0.2–0.3 mm, shallowly bidentate, serrulate or smooth. Achenes nearly filling body of perigynia. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19(3): 11 1944 to Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 19(3): 11 (1944), information provided by Alan E. on email Jun. 07 2021 More details could be found  [details]