Cyperaceae taxon details
Carex jianfengensis H.B.Yang, Xiao X.Li & G.D.Liu
1676515 (urn:lsid:marinespecies.org:taxname:1676515)
accepted
Species
terrestrial
Yang, H.; Li, X.; Wang, W.; Bai, C.; Liu, G. (2015). Carex jianfengensis (Carex sect. Rhomboidales, Cyperaceae), a New Species from Hainan, China. <em>PLOS ONE.</em> 10(9): e0136373., available online at https://doi.org/10.1371/journal.pone.0136373
page(s): 2 [details] Available for editors
[request]
page(s): 2 [details] Available for editors
[request]
Holotype IBSC, geounit Hainan
Holotype IBSC, geounit Hainan [details]
Description Perennial; rhizome short, covered with fibrous remains of old leaf sheath. Culms central, 2
−4 ×ca. 0.2 cm,...
Taxonomic remark Source in seed data: ipni Update namepublishedIn from PLoS ONE 10(9): e0136373 (2). 2015 [23 Sep 2015] [epublished] to PLoS...
−4 ×ca. 0.2 cm,...
Description Perennial; rhizome short, covered with fibrous remains of old leaf sheath. Culms central, 2
−4 ×ca. 0.2 cm, significantly shorter than leaves, hiding in leaf sheaths, trigonous. Leaves basal,
sheathed; blades linear, 25−65 × 1−1.6 cm, veins 3-ranked, green, flat, glabrous on both sur
faces, apex acuminate; sheaths 2−7 cm long, with purple vertical stripes, basal ones bladeless.
Involucral bracts slightly surpassing inflorescence, leaf-like, sparsely hispid, sheathed; sheaths
ca. 1 cm long, sparsely hispid. Inflorescence of spikes racemose, with 4 spikes, approximate,
occasionally 1 lateral spike arising from the culm base. Terminal spike staminate, trigonous
cylindrical, ca. 2.5 cm long; peduncle 2−3.5 cm long, sparsely hispid. Lateral spikes pistillate,
cylindrical, 2−3.5 × 0.7−1 cm, densely flowered, with peduncle 1−3 cm long; occasionally
peduncle up to 7 cm long when lowest lateral spike arises from the culm base. Staminate
glumes membranous, glabrous, narrowly ovate, ca. 5 mm long, truncate at apex, green 3-veined
costa excurrent into a short awn ca. 0.6−0.8 mm long; pistillate glumes triangular-lanceolate, 5
−7 mmlong,membranous, glabrous, green 3-veined costa excurrent into a short awn for ca. 2
mm.Perigynia longer than the glumes, green, oval, obscurely trigonous, 6−8 × 3 mm, membra
nous, distinctly veined, pubescent on veins, gradually contracted into a ca. 2 mm long beak; ori
fice 2-lobed with long teeth. Nutlets tightly enveloped, rhombic-ovoid, trigonous, 4−5mm
long, brownish-black, with angles constricted at the middle, base shortly stipitate, apex
abruptly contracted into an erect short beak 1 mm long; persistent style, base thickened. [details]
−4 ×ca. 0.2 cm, significantly shorter than leaves, hiding in leaf sheaths, trigonous. Leaves basal,
sheathed; blades linear, 25−65 × 1−1.6 cm, veins 3-ranked, green, flat, glabrous on both sur
faces, apex acuminate; sheaths 2−7 cm long, with purple vertical stripes, basal ones bladeless.
Involucral bracts slightly surpassing inflorescence, leaf-like, sparsely hispid, sheathed; sheaths
ca. 1 cm long, sparsely hispid. Inflorescence of spikes racemose, with 4 spikes, approximate,
occasionally 1 lateral spike arising from the culm base. Terminal spike staminate, trigonous
cylindrical, ca. 2.5 cm long; peduncle 2−3.5 cm long, sparsely hispid. Lateral spikes pistillate,
cylindrical, 2−3.5 × 0.7−1 cm, densely flowered, with peduncle 1−3 cm long; occasionally
peduncle up to 7 cm long when lowest lateral spike arises from the culm base. Staminate
glumes membranous, glabrous, narrowly ovate, ca. 5 mm long, truncate at apex, green 3-veined
costa excurrent into a short awn ca. 0.6−0.8 mm long; pistillate glumes triangular-lanceolate, 5
−7 mmlong,membranous, glabrous, green 3-veined costa excurrent into a short awn for ca. 2
mm.Perigynia longer than the glumes, green, oval, obscurely trigonous, 6−8 × 3 mm, membra
nous, distinctly veined, pubescent on veins, gradually contracted into a ca. 2 mm long beak; ori
fice 2-lobed with long teeth. Nutlets tightly enveloped, rhombic-ovoid, trigonous, 4−5mm
long, brownish-black, with angles constricted at the middle, base shortly stipitate, apex
abruptly contracted into an erect short beak 1 mm long; persistent style, base thickened. [details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from PLoS ONE 10(9): e0136373 (2). 2015 [23 Sep 2015] [epublished] to PLoS...
Taxonomic remark Source in seed data: ipni Update namepublishedIn from PLoS ONE 10(9): e0136373 (2). 2015 [23 Sep 2015] [epublished] to PLoS ONE 10(9): e0136373 (2) (2015), information provided by Alan E. on email Jun. 07 2021 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex jianfengensis H.B.Yang, Xiao X.Li & G.D.Liu. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676515 on 2025-09-13
Date
action
by
2024-12-10 11:47:54Z
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db_admin
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Yang, H.; Li, X.; Wang, W.; Bai, C.; Liu, G. (2015). Carex jianfengensis (Carex sect. Rhomboidales, Cyperaceae), a New Species from Hainan, China. <em>PLOS ONE.</em> 10(9): e0136373., available online at https://doi.org/10.1371/journal.pone.0136373
page(s): 2 [details] Available for editors [request]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 2 [details] Available for editors
[request]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]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Perennial; rhizome short, covered with fibrous remains of old leaf sheath. Culms central, 2−4 ×ca. 0.2 cm, significantly shorter than leaves, hiding in leaf sheaths, trigonous. Leaves basal,
sheathed; blades linear, 25−65 × 1−1.6 cm, veins 3-ranked, green, flat, glabrous on both sur
faces, apex acuminate; sheaths 2−7 cm long, with purple vertical stripes, basal ones bladeless.
Involucral bracts slightly surpassing inflorescence, leaf-like, sparsely hispid, sheathed; sheaths
ca. 1 cm long, sparsely hispid. Inflorescence of spikes racemose, with 4 spikes, approximate,
occasionally 1 lateral spike arising from the culm base. Terminal spike staminate, trigonous
cylindrical, ca. 2.5 cm long; peduncle 2−3.5 cm long, sparsely hispid. Lateral spikes pistillate,
cylindrical, 2−3.5 × 0.7−1 cm, densely flowered, with peduncle 1−3 cm long; occasionally
peduncle up to 7 cm long when lowest lateral spike arises from the culm base. Staminate
glumes membranous, glabrous, narrowly ovate, ca. 5 mm long, truncate at apex, green 3-veined
costa excurrent into a short awn ca. 0.6−0.8 mm long; pistillate glumes triangular-lanceolate, 5
−7 mmlong,membranous, glabrous, green 3-veined costa excurrent into a short awn for ca. 2
mm.Perigynia longer than the glumes, green, oval, obscurely trigonous, 6−8 × 3 mm, membra
nous, distinctly veined, pubescent on veins, gradually contracted into a ca. 2 mm long beak; ori
fice 2-lobed with long teeth. Nutlets tightly enveloped, rhombic-ovoid, trigonous, 4−5mm
long, brownish-black, with angles constricted at the middle, base shortly stipitate, apex
abruptly contracted into an erect short beak 1 mm long; persistent style, base thickened. [details]
Taxonomic remark Source in seed data: ipni Update namepublishedIn from PLoS ONE 10(9): e0136373 (2). 2015 [23 Sep 2015] [epublished] to PLoS ONE 10(9): e0136373 (2) (2015), information provided by Alan E. on email Jun. 07 2021 [details]
