Cyperaceae taxon details
Carex paracheniana X.F.Jin, D.A.Simpson & C.Z.Zheng
1677893 (urn:lsid:marinespecies.org:taxname:1677893)
accepted
Species
terrestrial
Jin, X.-F.; Simpson, D. A.; Zheng, C.-Z.; Sun, L.; Zhang, H.-W. (2012). Carex paracheniana (carex sect. rhomboidales, cyperaceae), a new species from Guangxi and Guizhou, China. Systematic Botany, 37(4): 929-937., available online at https://doi.org/10.1600/036364412X656617
page(s): 931 [details]
page(s): 931 [details]
Holotype HTC, geounit Guangxi
Holotype HTC, geounit Guangxi [details]
Description Herb perennial. Rhizome brownish black, ligneous, thick, short, with many yellowish-brown, fibrous adventitious roots....
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Syst. Bot. 37(4): 931. 2012 [26 Oct 2012] to Syst. Bot. 37: 931...
Description Herb perennial. Rhizome brownish black, ligneous, thick, short, with many yellowish-brown, fibrous adventitious roots. Culms caespitose, central, 8-35 cm tall, trigonous, smooth, covered with purplish-brown fibrous sheaths at base. Leaves longer or equal to culms; leaf-blade 3-5 mm wide, flat, smooth on lower half, scabrous on upper margins; sheaths brown, fibriform at apex. Involucral bracts leaf-like, shorter than inflorescence, sheathed; sheaths 0. 5-1. 5 cm long, obliquely truncate at orifice. Inflorescence paniculate, with 3 or 4 spikes; terminal spike staminate, cylindrical or clavate, yellowish brown, 2-3 cm long, 2-2. 5 mm wide, with a 2. 5-4 cm long scabrous peduncle at base; lateral spikes pistillate, bearing a few staminate flowers at apex» eylindrical, 1-3 cm long, 7-9 mm wide, densely flowered, pedunculate; peduncles 1. 5-3
cm long, slightly exserted from sheaths. Staminate scales ovate-oblong, pale brown, membranous, 4-4. 5 mm long, obtuse at apex, green 3-veined costa on dorsal surface. Pistillate scales ovate-elliptic, 6. 5-7 mm long (including awn), glaucous or pale yellow, acuminate at apex, green 3-veined costa excurrent into a ca. 2 mm long scabrous awn. Perigynia broadly ovoid (excluding beak) , 7-7. 5 mm long, slightly longer than pistillate scales (including beak), obliquely patent, obtusely trigonous, herbaceous, brownish green, distinctly veined, sparsely pubescent on upper veins, abruptly contracted into a ca. 2 mm long beak at apex; beak sparsely pubescent at margin, orifice 2-lobed with short teeth, Stigmas 3; style thickened at base. Achenes tightly enveloped by the perigynia, rhombic-ovoid, trigonous, 4. 5-5 mm long (including beak), castaneous, with 3 angles constricted at middle, sides concave above and below, shortly curved,
stipitate at base, abruptly contracted into a ca. 1 mm long cylindrical beak at apex, beak slightly curved, slightly annulate at orifice.
[details]
cm long, slightly exserted from sheaths. Staminate scales ovate-oblong, pale brown, membranous, 4-4. 5 mm long, obtuse at apex, green 3-veined costa on dorsal surface. Pistillate scales ovate-elliptic, 6. 5-7 mm long (including awn), glaucous or pale yellow, acuminate at apex, green 3-veined costa excurrent into a ca. 2 mm long scabrous awn. Perigynia broadly ovoid (excluding beak) , 7-7. 5 mm long, slightly longer than pistillate scales (including beak), obliquely patent, obtusely trigonous, herbaceous, brownish green, distinctly veined, sparsely pubescent on upper veins, abruptly contracted into a ca. 2 mm long beak at apex; beak sparsely pubescent at margin, orifice 2-lobed with short teeth, Stigmas 3; style thickened at base. Achenes tightly enveloped by the perigynia, rhombic-ovoid, trigonous, 4. 5-5 mm long (including beak), castaneous, with 3 angles constricted at middle, sides concave above and below, shortly curved,
stipitate at base, abruptly contracted into a ca. 1 mm long cylindrical beak at apex, beak slightly curved, slightly annulate at orifice.
[details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Syst. Bot. 37(4): 931. 2012 [26 Oct 2012] to Syst. Bot. 37: 931...
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Syst. Bot. 37(4): 931. 2012 [26 Oct 2012] to Syst. Bot. 37: 931 (2012), information provided by Alan E. on email Jun. 07 2021 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex paracheniana X.F.Jin, D.A.Simpson & C.Z.Zheng. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677893 on 2025-09-12
Date
action
by
2024-12-10 11:47:54Z
unchecked
db_admin
The webpage text is licensed under a Creative Commons
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Nomenclature
original description
Jin, X.-F.; Simpson, D. A.; Zheng, C.-Z.; Sun, L.; Zhang, H.-W. (2012). Carex paracheniana (carex sect. rhomboidales, cyperaceae), a new species from Guangxi and Guizhou, China. Systematic Botany, 37(4): 929-937., available online at https://doi.org/10.1600/036364412X656617
page(s): 931 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 931 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Other
additional source
Li, B. Z.; Zhang, S. R. (2024). An updated species checklist and taxonomic synopsis of Cyperaceae in China. <em>Biodiversity Science.</em> 32(7): 24106., available online at https://doi.org/10.17520/biods.2024106 [details] Available for editors 
[request]
additional source Jin, X. F. & Chao-Zhong, Z. (2013). Taxonomy of Carex sect. Rhomboidales (Cyperaceae). [details] Available for editors [request]
[request]additional source Jin, X. F. & Chao-Zhong, Z. (2013). Taxonomy of Carex sect. Rhomboidales (Cyperaceae). [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Herb perennial. Rhizome brownish black, ligneous, thick, short, with many yellowish-brown, fibrous adventitious roots. Culms caespitose, central, 8-35 cm tall, trigonous, smooth, covered with purplish-brown fibrous sheaths at base. Leaves longer or equal to culms; leaf-blade 3-5 mm wide, flat, smooth on lower half, scabrous on upper margins; sheaths brown, fibriform at apex. Involucral bracts leaf-like, shorter than inflorescence, sheathed; sheaths 0. 5-1. 5 cm long, obliquely truncate at orifice. Inflorescence paniculate, with 3 or 4 spikes; terminal spike staminate, cylindrical or clavate, yellowish brown, 2-3 cm long, 2-2. 5 mm wide, with a 2. 5-4 cm long scabrous peduncle at base; lateral spikes pistillate, bearing a few staminate flowers at apex» eylindrical, 1-3 cm long, 7-9 mm wide, densely flowered, pedunculate; peduncles 1. 5-3cm long, slightly exserted from sheaths. Staminate scales ovate-oblong, pale brown, membranous, 4-4. 5 mm long, obtuse at apex, green 3-veined costa on dorsal surface. Pistillate scales ovate-elliptic, 6. 5-7 mm long (including awn), glaucous or pale yellow, acuminate at apex, green 3-veined costa excurrent into a ca. 2 mm long scabrous awn. Perigynia broadly ovoid (excluding beak) , 7-7. 5 mm long, slightly longer than pistillate scales (including beak), obliquely patent, obtusely trigonous, herbaceous, brownish green, distinctly veined, sparsely pubescent on upper veins, abruptly contracted into a ca. 2 mm long beak at apex; beak sparsely pubescent at margin, orifice 2-lobed with short teeth, Stigmas 3; style thickened at base. Achenes tightly enveloped by the perigynia, rhombic-ovoid, trigonous, 4. 5-5 mm long (including beak), castaneous, with 3 angles constricted at middle, sides concave above and below, shortly curved,
stipitate at base, abruptly contracted into a ca. 1 mm long cylindrical beak at apex, beak slightly curved, slightly annulate at orifice.
[details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from Syst. Bot. 37(4): 931. 2012 [26 Oct 2012] to Syst. Bot. 37: 931 (2012), information provided by Alan E. on email Jun. 07 2021 [details]
