Cyperaceae taxon details
Carex siroumensis Koidz.
1676026 (urn:lsid:marinespecies.org:taxname:1676026)
accepted
Species
Carex hotaizanensis Akiyama · unaccepted
terrestrial
Koidzumi, G. (1918). Contributiones ad Floram Asieae Orientalis. <em>The Botanical Magazine (Tokyo).</em> 32: 53-63., available online at https://www.biodiversitylibrary.org/page/41605357#page/69/mode/1up
page(s): 54 [details]
page(s): 54 [details]
Holotype , geounit Japan
Holotype, geounit Japan [details]
Description Rhizome short, woody, oblique. Culms densely tufted, 10-22 cm tall, slender, compressed trigonous, slightly scabrous,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 32: 54 1918 to Bot. Mag. (Tokyo) 32: 54 (1918),...
Description Rhizome short, woody, oblique. Culms densely tufted, 10-22 cm tall, slender, compressed trigonous, slightly scabrous, clothed at base with light brown sheaths eventually disintegrating into parallel fibers. Leaves equaling or shorter than culm, blades linear, 1-2 mm wide, flattish, sometimes involute, margins scabrous, apex acuminate. Lower involucral bracts leaflike, shorter than inflorescence, sheathing 1-2 mm, upper involucral bracts glumelike. Spikes 3-7; terminal spike gynaecandrous, rarely male, clavate, 1.4-1.8 cm; remaining spikes female, cylindric, 1-2 cm, upper 1 or 2 approximate, sessile or subsessile, lowest spike slightly distant, with long peduncle. Female glumes purple-brown, elliptic-ovate, 2.5-3.5 mm, margins white hyaline, yellow-green 1-veined costa excurrent into a mucro, apex acute. Utricles yellow-green or purple-brown at apex, longer than glume, oblong-lanceolate, compressed trigonous, 4-5.5 mm, membranous, hirsute, faintly veined, base cuneate, margins scabrous, apex gradually attenuate into a beak, orifice 2-toothed. Nutlets light brown, loosely enveloped, oblong, compressed trigonous, 2-2.5 mm, base with stipe ca. 1 mm; style erect, base not thickened; stigmas 3. Fl. and fr. Jul-Aug. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 32: 54 1918 to Bot. Mag. (Tokyo) 32: 54 (1918),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 32: 54 1918 to Bot. Mag. (Tokyo) 32: 54 (1918), 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 siroumensis Koidz.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676026 on 2025-09-13
Date
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2024-12-10 11:47:54Z
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Nomenclature
original description
Koidzumi, G. (1918). Contributiones ad Floram Asieae Orientalis. <em>The Botanical Magazine (Tokyo).</em> 32: 53-63., available online at https://www.biodiversitylibrary.org/page/41605357#page/69/mode/1up
page(s): 54 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 54 [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]
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype, geounit Japan [details]
From editor or global species database
Description Rhizome short, woody, oblique. Culms densely tufted, 10-22 cm tall, slender, compressed trigonous, slightly scabrous, clothed at base with light brown sheaths eventually disintegrating into parallel fibers. Leaves equaling or shorter than culm, blades linear, 1-2 mm wide, flattish, sometimes involute, margins scabrous, apex acuminate. Lower involucral bracts leaflike, shorter than inflorescence, sheathing 1-2 mm, upper involucral bracts glumelike. Spikes 3-7; terminal spike gynaecandrous, rarely male, clavate, 1.4-1.8 cm; remaining spikes female, cylindric, 1-2 cm, upper 1 or 2 approximate, sessile or subsessile, lowest spike slightly distant, with long peduncle. Female glumes purple-brown, elliptic-ovate, 2.5-3.5 mm, margins white hyaline, yellow-green 1-veined costa excurrent into a mucro, apex acute. Utricles yellow-green or purple-brown at apex, longer than glume, oblong-lanceolate, compressed trigonous, 4-5.5 mm, membranous, hirsute, faintly veined, base cuneate, margins scabrous, apex gradually attenuate into a beak, orifice 2-toothed. Nutlets light brown, loosely enveloped, oblong, compressed trigonous, 2-2.5 mm, base with stipe ca. 1 mm; style erect, base not thickened; stigmas 3. Fl. and fr. Jul-Aug. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 32: 54 1918 to Bot. Mag. (Tokyo) 32: 54 (1918), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
| Language | Name | |
|---|---|---|
| Japanese | タカネナルコ（Takane-naruko） | [details] |
To Biodiversity Heritage Library (4 publications)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex hotaizanensis Akiyama)
To Plants of the World Online (from synonym Carex hotaizanensis Akiyama)
To Plants of the World Online
To University of Tokyo Herbarium (Carex siroumensis type TI00010253)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex hotaizanensis Akiyama)
To Plants of the World Online (from synonym Carex hotaizanensis Akiyama)
To Plants of the World Online
To University of Tokyo Herbarium (Carex siroumensis type TI00010253)
From editor or global species database
Hosted externally
