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Cyperaceae taxon details

Carex mochomuensis Katsuy.

1676289  (urn:lsid:marinespecies.org:taxname:1676289)

accepted
Species
terrestrial
Katsuyama, T. (2009). A New Species of the Genus Carex (Cyperaceae) from Yakushima Island, Japan. <em>Journal of Japanese Botany.</em> 84(1): 8-12.
page(s): 8 [details] Available for editors  PDF available [request]
Holotype  NA0129596, geounit Kyushu  
Holotype NA0129596, geounit Kyushu [details]
Description Perennial evergreen herbs. Rhizome short, stout, densely caespitose. Culms central, slender, stiff, 30–70 cm tall,...  
Description Perennial evergreen herbs. Rhizome short, stout, densely caespitose. Culms central, slender, stiff, 30–70 cm tall, slightly shorter than leaves, obtusely trigonous, smooth. Leaves basal and cauline; blades flat, 3–5 mmwide, stiff, scabrous on adaxial side and along margins, smooth on abaxial sides; basal sheaths with leaf blades, dark brown, strongly fibrillose. Flowers October to December. Inflorescence racemose, with 35 spikes, borue on upper 1/2 of culm, remote, solitary at each node; terminal spike staminate, pedunculate, linear, 6–15 cm long, 2–3 mm wide; lateral spikes pistillate, rather short pedunculate, peduncles enclosed in sheaths, erect to ascending, linear cylindrical, 2–10 cm long, 3–4 mm wide, rarely with short branch at the base, subdensely many flowered. Bracts with long sheaths, lades upper setaceous, lower short leafy. Staminate scales narrowly elliptic, 5–9 mm long, acuminate, membranaceous, midrib broadly light green to pale brown, both ide brownish, margins broadly scarious, sparsely ciliate. Pistillate scales elliptic, 3–5 mm long, shorter than perigynia, acute to acuminate, short aristate, arista and idrib scabrous, midrib light green, both sides brownish, margins broadly scarious, sparsely ciliate. Perigynia erect, oblong elliptic, compressed trigonous, 5–6 mm long, ca. 1.2 mm wide, herbaceous, multi-veined, densely hispid, base stipitate, stipe, 1–1.5 mm long, rather long beaked, beak 1–1.5 mm long, apex deeply bidentate to bifid. Achenes tightly enveloped, elliptic, obtusely trigonous, 3–4 mm long, ca. 1 mm wide, stipitate, stipe 1–1.5 mm long, apex slightly annulate. Style ca. 1 mm long, base slightly or not thickened; stigmas 3, ca. 3 mm long, rather persistent. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Jap. Bot. 84(1): 8 (-12; figs. 1-2). 2009 [20 Feb 2009] to J. Jap....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Jap. Bot. 84(1): 8 (-12; figs. 1-2). 2009 [20 Feb 2009] to J. Jap. Bot. 84: 8 (2009), 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 mochomuensis Katsuy.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676289 on 2025-09-11
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 Katsuyama, T. (2009). A New Species of the Genus Carex (Cyperaceae) from Yakushima Island, Japan. <em>Journal of Japanese Botany.</em> 84(1): 8-12.
page(s): 8 [details] Available for editors  PDF available [request]

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 NA0129596, geounit Kyushu [details]
From editor or global species database
Description Perennial evergreen herbs. Rhizome short, stout, densely caespitose. Culms central, slender, stiff, 30–70 cm tall, slightly shorter than leaves, obtusely trigonous, smooth. Leaves basal and cauline; blades flat, 3–5 mmwide, stiff, scabrous on adaxial side and along margins, smooth on abaxial sides; basal sheaths with leaf blades, dark brown, strongly fibrillose. Flowers October to December. Inflorescence racemose, with 35 spikes, borue on upper 1/2 of culm, remote, solitary at each node; terminal spike staminate, pedunculate, linear, 6–15 cm long, 2–3 mm wide; lateral spikes pistillate, rather short pedunculate, peduncles enclosed in sheaths, erect to ascending, linear cylindrical, 2–10 cm long, 3–4 mm wide, rarely with short branch at the base, subdensely many flowered. Bracts with long sheaths, lades upper setaceous, lower short leafy. Staminate scales narrowly elliptic, 5–9 mm long, acuminate, membranaceous, midrib broadly light green to pale brown, both ide brownish, margins broadly scarious, sparsely ciliate. Pistillate scales elliptic, 3–5 mm long, shorter than perigynia, acute to acuminate, short aristate, arista and idrib scabrous, midrib light green, both sides brownish, margins broadly scarious, sparsely ciliate. Perigynia erect, oblong elliptic, compressed trigonous, 5–6 mm long, ca. 1.2 mm wide, herbaceous, multi-veined, densely hispid, base stipitate, stipe, 1–1.5 mm long, rather long beaked, beak 1–1.5 mm long, apex deeply bidentate to bifid. Achenes tightly enveloped, elliptic, obtusely trigonous, 3–4 mm long, ca. 1 mm wide, stipitate, stipe 1–1.5 mm long, apex slightly annulate. Style ca. 1 mm long, base slightly or not thickened; stigmas 3, ca. 3 mm long, rather persistent. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Jap. Bot. 84(1): 8 (-12; figs. 1-2). 2009 [20 Feb 2009] to J. Jap. Bot. 84: 8 (2009), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]