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Cyperaceae taxon details

Carex tenax Chapm. ex Dewey

1676163  (urn:lsid:marinespecies.org:taxname:1676163)

accepted
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Dewey, C. (1855). Caricography. <em>American Journal of Science and Arts.</em> Series 2. 19: 252-256., available online at https://www.biodiversitylibrary.org/page/29218403
page(s): 254 [details] 
Description Plants loosely cespitose; rhizomes stout. Culms 20–50 cm, smooth, glabrous. Leaf blades V-shaped in cross section when...  
Description Plants loosely cespitose; rhizomes stout. Culms 20–50 cm, smooth, glabrous. Leaf blades V-shaped in cross section when young, 1.5–2.8 mm wide, usually involute, proximally puberulent. Inflorescences: proximal bracts sheathless or sheath not more than 2(–5) mm; lateral spikes 10–20 × 5–9 mm, all in distal 1/2 of stem; terminal spike 10–32 × 1.5–3 mm. Pistillate scales 3–5-veined, ovate, 2.8–5 × 1.6–2.2 mm, proximal ones shorter than perigynia, apex acute. Staminate scales 3-veined, 4.5–5.5 × 1.6–2.2 mm. Perigynia 20–30-veined, subsessile, ovoid to obovoid, 4–6 × 1.9–2.4 mm, pilose, hairs not more than 0.2 mm; beak distinct or obscure, to 0.5 mm. Achenes sessile, 3–3.5 × 1.9–2 mm, almost filling bodies of perigynia. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex tenax Chapm. ex Dewey. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676163 on 2026-05-25
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2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
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2025-03-11 11:19:03Z
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Nomenclature

original description Dewey, C. (1855). Caricography. <em>American Journal of Science and Arts.</em> Series 2. 19: 252-256., available online at https://www.biodiversitylibrary.org/page/29218403
page(s): 254 [details] 

Other

additional source Ball, P.W.; Reznicek, A.A.; Murray, D.F. (2002). Magnoliophyta: Commelinidae (in part): Cyperaceae. In: Flora of North America. Vol. 23. Oxford University Press, New York., available online at http://floranorthamerica.org/Cyperaceae [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Description Plants loosely cespitose; rhizomes stout. Culms 20–50 cm, smooth, glabrous. Leaf blades V-shaped in cross section when young, 1.5–2.8 mm wide, usually involute, proximally puberulent. Inflorescences: proximal bracts sheathless or sheath not more than 2(–5) mm; lateral spikes 10–20 × 5–9 mm, all in distal 1/2 of stem; terminal spike 10–32 × 1.5–3 mm. Pistillate scales 3–5-veined, ovate, 2.8–5 × 1.6–2.2 mm, proximal ones shorter than perigynia, apex acute. Staminate scales 3-veined, 4.5–5.5 × 1.6–2.2 mm. Perigynia 20–30-veined, subsessile, ovoid to obovoid, 4–6 × 1.9–2.4 mm, pilose, hairs not more than 0.2 mm; beak distinct or obscure, to 0.5 mm. Achenes sessile, 3–3.5 × 1.9–2 mm, almost filling bodies of perigynia. [details]

Ecology Fruiting late spring–summer. Dry to dry-mesic, longleaf pine and sand-hill savannas; 0–200 m.  [details]
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