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Cyperaceae taxon details

Carex pseudomitrata X.F.Jin & J.M.Cen

1678062  (urn:lsid:marinespecies.org:taxname:1678062)

accepted
Species
terrestrial
Jin, X.-F.; Cen, J.-M.; Hahn, M.; Lu, Y.-F.; He, J.-J. (2015). Notes on Carex (Cyperaceae) from China (II): A taxonomic revision of sect. Radicales (Kük.) Nelmes. Phytotaxa, 217(2): 117-132., available online at https://doi.org/10.11646/phytotaxa.217.2.2
page(s): 127 [details] 
Holotype  E 00424757, geounit Yunnan  
Holotype E 00424757, geounit Yunnan [details]
Description  Perennial herbs. Rhizomes short, indurate. Culms 25–55 cm tall, 0.5–1 mm thick, trigonous, glabrous, smooth, with...  
Description  Perennial herbs. Rhizomes short, indurate. Culms 25–55 cm tall, 0.5–1 mm thick, trigonous, glabrous, smooth, with yellowish brown, persistent bladeless sheaths at base. Leaves shorter than culms, rarely equal in length; blades 1.5–3 mm wide, flat, scabrous on dorsal surfaces. Involucral bracts leaf-like, terminal 1 or 2 longer than inflorescence,
lower bracts shorter, sheathed; sheaths 5–25 mm long, with the lowest longer than others. Spikes 4–6, androgynous, cylindrical, 10–30 mm long, 3–4 mm wide; terminal 2 or 3 spikes closed, others remote; peduncles slightly exerted from sheaths, or enclosed; staminate part shorter than pistillate part, 3–6 mm long, densely flowered, pistillate part 5–25 mm long, sparsely flowered. Staminate scales oblong-lanceolate, 4.5–5 mm long (including awn), pale yellowish brown, acuminate at apex, green 3-veined costa extending 0.5–1 mm long scabrous awn at apex. Pistillate scales narrowly elliptic-lanceolate, 6.5–7 mm long (including awn), greenish white, acuminate at apex, green 3-veined costa extending 3–4 mm long scabrous awn at apex. Perigynia narrowly ellipsoid, trigonous (excluding beak), shorter than pistillate scales (including beak), 4–4.5 mm long, greenish yellow, membranaceous, whitish pubescence, conspicuously thinly veined, attenuate and stipitate at base, gradually contracted into a short beak at apex; orifice 2-lobed with short teeth, sparsely pubescent at margins. Achenes tightly enveloped, oblong-obovoid, trigonous, castaneous, ca. 2.2 mm long, abruptly attenuate and curved stipitate at base, shortly beaked at apex; style glabrous, thickened and curved at base; stigmas 3. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex pseudomitrata X.F.Jin & J.M.Cen. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678062 on 2025-09-12
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 Jin, X.-F.; Cen, J.-M.; Hahn, M.; Lu, Y.-F.; He, J.-J. (2015). Notes on Carex (Cyperaceae) from China (II): A taxonomic revision of sect. Radicales (Kük.) Nelmes. Phytotaxa, 217(2): 117-132., available online at https://doi.org/10.11646/phytotaxa.217.2.2
page(s): 127 [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  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Holotype E 00424757, geounit Yunnan [details]
From editor or global species database
Description  Perennial herbs. Rhizomes short, indurate. Culms 25–55 cm tall, 0.5–1 mm thick, trigonous, glabrous, smooth, with yellowish brown, persistent bladeless sheaths at base. Leaves shorter than culms, rarely equal in length; blades 1.5–3 mm wide, flat, scabrous on dorsal surfaces. Involucral bracts leaf-like, terminal 1 or 2 longer than inflorescence,
lower bracts shorter, sheathed; sheaths 5–25 mm long, with the lowest longer than others. Spikes 4–6, androgynous, cylindrical, 10–30 mm long, 3–4 mm wide; terminal 2 or 3 spikes closed, others remote; peduncles slightly exerted from sheaths, or enclosed; staminate part shorter than pistillate part, 3–6 mm long, densely flowered, pistillate part 5–25 mm long, sparsely flowered. Staminate scales oblong-lanceolate, 4.5–5 mm long (including awn), pale yellowish brown, acuminate at apex, green 3-veined costa extending 0.5–1 mm long scabrous awn at apex. Pistillate scales narrowly elliptic-lanceolate, 6.5–7 mm long (including awn), greenish white, acuminate at apex, green 3-veined costa extending 3–4 mm long scabrous awn at apex. Perigynia narrowly ellipsoid, trigonous (excluding beak), shorter than pistillate scales (including beak), 4–4.5 mm long, greenish yellow, membranaceous, whitish pubescence, conspicuously thinly veined, attenuate and stipitate at base, gradually contracted into a short beak at apex; orifice 2-lobed with short teeth, sparsely pubescent at margins. Achenes tightly enveloped, oblong-obovoid, trigonous, castaneous, ca. 2.2 mm long, abruptly attenuate and curved stipitate at base, shortly beaked at apex; style glabrous, thickened and curved at base; stigmas 3. [details]