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Cyperaceae taxon details

Carex laticeps C.B.Clarke ex Franch.

1695573  (urn:lsid:marinespecies.org:taxname:1695573)

accepted
Species
terrestrial
Not documented
Description Herbs perennial. Rhizome short, ligneous, stoloniferous. Culms central, 20-45 cm tall, trigonous, pubescent, covered with...  
Description Herbs perennial. Rhizome short, ligneous, stoloniferous. Culms central, 20-45 cm tall, trigonous, pubescent, covered with brown fibrous sheaths at base. Leaves shorter than culms; leaf-blade green, flat, revolute, leathery, pubescent on both surfaces, 3-5 (13) mm wide, acuminate at apex, scabrous on upper margins. Involucral bracts shortly leaf-like, pubescent, shorter than inflorescence, sheathed; sheaths 1. 5-2. 5 cm long, pubescent, obliquely truncate at orifice. Inflorescence paniculate, with 2 or 3 spikes; terminal spike staminate» clavate, 1. 5-4 cm long, ca. 5 mm wide, with a long peduncle at base; lateral spikes pistillate, cylindrical, 1. 5-3. 5 cm long, 8-10 mm wide, densely flowered, pedunculate; peduncles exserted from sheaths. Staminate scales narrowly ovate, yellowish green, pubescent, ca. 7 mm long, acuminate at apex, green 3-veined costa on dorsal surface. Pistillate scales ovate, pale green or yellowish green, pubescent, 5-6 mm long, acuminate at apex, green 3-veined costa excurrent into a short scabrous awn. Perigynia broadly ovoid (excluding beak), 7-8 mm long, longer than pistillate scales (including beak)>, obliquely patent, obtusely trigonous, papery» brownish green, distinctly veined, densely pubescent on veins, gradually contracted into a ca. 3 mm long beak; orifice 2-lobed with long teeth. Stigmas 3; style slightly thicken at base. Achenes tightly enveloped, rhombic-ovoid, trigonous, 3-4 mm long (including beak), yellowish brown or castaneous, with 3 angles constricted at middle, sides concave above and below, shortly curved, stipitate at base, abruptly contracted into a short beak at apex, beak coiled.
 [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Nouv. Arch. Mus. Hist. Nat. sér. 3, 9: 178. 1897 to Nouv. Arch. Mus....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Nouv. Arch. Mus. Hist. Nat. sér. 3, 9: 178. 1897 to Nouv. Arch. Mus. Hist. Nat. , sér. 3, 9: 178 (1897), 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 laticeps C.B.Clarke ex Franch.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1695573 on 2025-09-12
Date
action
by
2023-09-06 09:29:14Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-02-27 08:59:44Z
changed
2025-07-10 09:43:14Z
changed

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Nomenclature

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

Other

additional source Jin, X. F. & Chao-Zhong, Z. (2013). Taxonomy of Carex sect. Rhomboidales (Cyperaceae). [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Additional information 2n=58 [details]

Description Herbs perennial. Rhizome short, ligneous, stoloniferous. Culms central, 20-45 cm tall, trigonous, pubescent, covered with brown fibrous sheaths at base. Leaves shorter than culms; leaf-blade green, flat, revolute, leathery, pubescent on both surfaces, 3-5 (13) mm wide, acuminate at apex, scabrous on upper margins. Involucral bracts shortly leaf-like, pubescent, shorter than inflorescence, sheathed; sheaths 1. 5-2. 5 cm long, pubescent, obliquely truncate at orifice. Inflorescence paniculate, with 2 or 3 spikes; terminal spike staminate» clavate, 1. 5-4 cm long, ca. 5 mm wide, with a long peduncle at base; lateral spikes pistillate, cylindrical, 1. 5-3. 5 cm long, 8-10 mm wide, densely flowered, pedunculate; peduncles exserted from sheaths. Staminate scales narrowly ovate, yellowish green, pubescent, ca. 7 mm long, acuminate at apex, green 3-veined costa on dorsal surface. Pistillate scales ovate, pale green or yellowish green, pubescent, 5-6 mm long, acuminate at apex, green 3-veined costa excurrent into a short scabrous awn. Perigynia broadly ovoid (excluding beak), 7-8 mm long, longer than pistillate scales (including beak)>, obliquely patent, obtusely trigonous, papery» brownish green, distinctly veined, densely pubescent on veins, gradually contracted into a ca. 3 mm long beak; orifice 2-lobed with long teeth. Stigmas 3; style slightly thicken at base. Achenes tightly enveloped, rhombic-ovoid, trigonous, 3-4 mm long (including beak), yellowish brown or castaneous, with 3 angles constricted at middle, sides concave above and below, shortly curved, stipitate at base, abruptly contracted into a short beak at apex, beak coiled.
 [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Nouv. Arch. Mus. Hist. Nat. sér. 3, 9: 178. 1897 to Nouv. Arch. Mus. Hist. Nat. , sér. 3, 9: 178 (1897), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
LanguageName 
Japanese オオムギスゲ(Oh-mugisuge)  [details]