Cyperaceae taxon details
Carex unisexualis C.B.Clarke
1677331 (urn:lsid:marinespecies.org:taxname:1677331)
accepted
Species
Carex fluviatilis var. unisexualis (C.B.Clarke) Kük. · unaccepted
terrestrial
Clarke, C. B. (1903). Cyperaceae. In: Forbes, F. & Hemsley, W. B. An enumeration of all the plants known from China proper, Fornosa, Hainan, Corea, the Luchu Archipelago and the Island of Hongkong, together with their distribution and synonymy. <em>Journal of the Linnean Society. Botany.</em> 36: 202-319., available online at https://www.biodiversitylibrary.org/page/178059#page/222/mode/1up
page(s): 316 [details]
page(s): 316 [details]
Description Rhizome long creeping, slender, clothed with brown sheaths disintegrating into fibers. Culms (10-)15-50 cm tall, compressed...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 316. 1904 [1903-1905 publ. 1904] to J. Linn....
Description Rhizome long creeping, slender, clothed with brown sheaths disintegrating into fibers. Culms (10-)15-50 cm tall, compressed trigonous, with pale brown sheaths at base. Leaves shorter than culm, blades linear, 1-2.5 mm wide, flat or plicate, apex acuminate. Involucral bracts setaceous or glumelike. Plants dioecious (rarely monoecious); female spicate inflorescence cylindric, 2.5-8 × 0.7-1 cm; male inflorescence rather narrow, 5-6 mm wide; spikes 15-30, unisexual, rarely androgynous; female spikes oblong-ovate, 5-8 × ca. 4 mm wide; male spikes oblong, ca. 6 × 2-3 mm. Female glumes pale green, ovate, 2-3 mm, sparsely ferruginous puncticulate, margins white hyaline, green 1-veined costa excurrent into an awn at acute apex. Utricles greenish or pale, ferruginous dotted, longer than glume, ovate, plano-convex, 2-3 × 1-1.5 mm, membranous, many veined on both faces, base subrounded, spongy, shortly stipitate, upper margins serrulate winged, apex gradually narrowed into a scabrous beak, orifice 2-toothed. Nutlets dark brown, loosely enveloped, ovate or elliptic, plano-convex, ca. 1.2 mm, lustrous, base shortly stipitate, apex rounded; stigmas 2. Fl. and fr. Apr-Jun. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 316. 1904 [1903-1905 publ. 1904] to J. Linn....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 316. 1904 [1903-1905 publ. 1904] to J. Linn. Soc., Bot. 36: 316 (1904), 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 unisexualis C.B.Clarke. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677331 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
Clarke, C. B. (1903). Cyperaceae. In: Forbes, F. & Hemsley, W. B. An enumeration of all the plants known from China proper, Fornosa, Hainan, Corea, the Luchu Archipelago and the Island of Hongkong, together with their distribution and synonymy. <em>Journal of the Linnean Society. Botany.</em> 36: 202-319., available online at https://www.biodiversitylibrary.org/page/178059#page/222/mode/1up
page(s): 316 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 316 [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
Syntype K 000960661, geounit Shanghai [details]
From editor or global species database
Description Rhizome long creeping, slender, clothed with brown sheaths disintegrating into fibers. Culms (10-)15-50 cm tall, compressed trigonous, with pale brown sheaths at base. Leaves shorter than culm, blades linear, 1-2.5 mm wide, flat or plicate, apex acuminate. Involucral bracts setaceous or glumelike. Plants dioecious (rarely monoecious); female spicate inflorescence cylindric, 2.5-8 × 0.7-1 cm; male inflorescence rather narrow, 5-6 mm wide; spikes 15-30, unisexual, rarely androgynous; female spikes oblong-ovate, 5-8 × ca. 4 mm wide; male spikes oblong, ca. 6 × 2-3 mm. Female glumes pale green, ovate, 2-3 mm, sparsely ferruginous puncticulate, margins white hyaline, green 1-veined costa excurrent into an awn at acute apex. Utricles greenish or pale, ferruginous dotted, longer than glume, ovate, plano-convex, 2-3 × 1-1.5 mm, membranous, many veined on both faces, base subrounded, spongy, shortly stipitate, upper margins serrulate winged, apex gradually narrowed into a scabrous beak, orifice 2-toothed. Nutlets dark brown, loosely enveloped, ovate or elliptic, plano-convex, ca. 1.2 mm, lustrous, base shortly stipitate, apex rounded; stigmas 2. Fl. and fr. Apr-Jun. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 316. 1904 [1903-1905 publ. 1904] to J. Linn. Soc., Bot. 36: 316 (1904), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (4 publications)
To European Nucleotide Archive, ENA (Carex unisexualis)
To GenBank (1 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex fluviatilis var. unisexualis (C.B.Clarke) Kük.)
To Plants of the World Online (from synonym Carex fluviatilis var. unisexualis (C.B.Clarke) Kük.)
To Plants of the World Online
To European Nucleotide Archive, ENA (Carex unisexualis)
To GenBank (1 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex fluviatilis var. unisexualis (C.B.Clarke) Kük.)
To Plants of the World Online (from synonym Carex fluviatilis var. unisexualis (C.B.Clarke) Kük.)
To Plants of the World Online
