Cyperaceae taxon details
Carex laxa Wahlenb.
1677483 (urn:lsid:marinespecies.org:taxname:1677483)
accepted
Species
Carex laxa f. approximata Holmb. · unaccepted
Carex laxa f. refracta Holmb. · unaccepted
Carex macrochlamys Franch. · unaccepted
Olamblis laxa (Wahlenb.) Raf. · unaccepted
- Forma Carex laxa f. approximata Holmb. accepted as Carex laxa Wahlenb.
- Forma Carex laxa f. refracta Holmb. accepted as Carex laxa Wahlenb.
terrestrial
Wahlenberg, G. (1803). Inledning til Caricographien. <em>Kongl. Vetenskaps Academiens Nya Handlingar.</em> 24: 138-170., available online at https://www.biodiversitylibrary.org/page/46986891
page(s): 156 [details]
page(s): 156 [details]
Description Rhizome slender stoloniferous. Culms 25-35 cm tall, slender, sometimes slightly pendent at apex, obtusely trigonous,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Kongl. Vetensk. Acad. Nya Handl. (1803) 156. to Kongl. Vetensk. Acad....
Description Rhizome slender stoloniferous. Culms 25-35 cm tall, slender, sometimes slightly pendent at apex, obtusely trigonous, smooth, brownish and bladeless sheathed at base. Leaves shorter than culm, blades 1-2 mm wide, flat, sometimes longitudinally grooved, slightly soft, scabrid on margins, sheathed. Involucral bracts leaflike, with long sheath and short blade. Spikes usually 3, rather remote; terminal spike male, linear-lanceolate; lateral spikes female, oblong, 1-2 cm, subdensely few flowered, peduncles slender, pendent. Female glumes yellowish brown, ovate or oblong-ovate, ca. 3 mm, membranous, green 1-veined, apex obtuse, mucronate. Utricles greenish, suberect, slightly longer than glume, oblong-elliptic, indistinctly trigonous, ca. 3.5 mm, leathery, glabrous, densely papillose, few veined, base gradually narrowed and cuneate, shortly stipitate, apex abruptly contracted into a short beak, beak ferruginous-brown, truncate at orifice. Nutlets rather tightly enveloped in utricle, obovate, trigonous; style exserted from utricle, base not thickened; stigmas 3. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Kongl. Vetensk. Acad. Nya Handl. (1803) 156. to Kongl. Vetensk. Acad....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Kongl. Vetensk. Acad. Nya Handl. (1803) 156. to Kongl. Vetensk. Acad. Nya Handl. 24: 156 (1803), 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 laxa Wahlenb.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677483 on 2025-09-11
Date
action
by
2024-12-10 11:47:54Z
unchecked
db_admin
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Wahlenberg, G. (1803). Inledning til Caricographien. <em>Kongl. Vetenskaps Academiens Nya Handlingar.</em> 24: 138-170., available online at https://www.biodiversitylibrary.org/page/46986891
page(s): 156 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 156 [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
Isolectotype LD 1768123, geounit Lapland [details]
Syntype (of Carex macrochlamys Franch.) P 00285250, geounit Japan [details]
From editor or global species database
Description Rhizome slender stoloniferous. Culms 25-35 cm tall, slender, sometimes slightly pendent at apex, obtusely trigonous, smooth, brownish and bladeless sheathed at base. Leaves shorter than culm, blades 1-2 mm wide, flat, sometimes longitudinally grooved, slightly soft, scabrid on margins, sheathed. Involucral bracts leaflike, with long sheath and short blade. Spikes usually 3, rather remote; terminal spike male, linear-lanceolate; lateral spikes female, oblong, 1-2 cm, subdensely few flowered, peduncles slender, pendent. Female glumes yellowish brown, ovate or oblong-ovate, ca. 3 mm, membranous, green 1-veined, apex obtuse, mucronate. Utricles greenish, suberect, slightly longer than glume, oblong-elliptic, indistinctly trigonous, ca. 3.5 mm, leathery, glabrous, densely papillose, few veined, base gradually narrowed and cuneate, shortly stipitate, apex abruptly contracted into a short beak, beak ferruginous-brown, truncate at orifice. Nutlets rather tightly enveloped in utricle, obovate, trigonous; style exserted from utricle, base not thickened; stigmas 3. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Kongl. Vetensk. Acad. Nya Handl. (1803) 156. to Kongl. Vetensk. Acad. Nya Handl. 24: 156 (1803), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
| Language | Name | |
|---|---|---|
| Japanese | イトナルコスゲ | [details] |
Photos of Cyperaceae by Hoshino Labo. from Japan
To Biodiversity Heritage Library (111 publications)
To European Nucleotide Archive, ENA (Carex laxa)
To International Plant Names Index (IPNI) (from synonym Carex macrochlamys Franch.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Olamblis laxa (Wahlenb.) Raf.)
To IUCN Red List (Data Deficient)
To Plants of the World Online
To Plants of the World Online (from synonym Carex macrochlamys Franch.)
To Plants of the World Online (from synonym Olamblis laxa (Wahlenb.) Raf.)
To Plants of the World Online (from synonym Carex laxa f. approximata Holmb.)
To Plants of the World Online (from synonym Carex laxa f. refracta Holmb.)
To the Natural History Museum, London (Carex laxa Wahlenb. BM001067138 type 1)
To Biodiversity Heritage Library (111 publications)
To European Nucleotide Archive, ENA (Carex laxa)
To International Plant Names Index (IPNI) (from synonym Carex macrochlamys Franch.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Olamblis laxa (Wahlenb.) Raf.)
To IUCN Red List (Data Deficient)
To Plants of the World Online
To Plants of the World Online (from synonym Carex macrochlamys Franch.)
To Plants of the World Online (from synonym Olamblis laxa (Wahlenb.) Raf.)
To Plants of the World Online (from synonym Carex laxa f. approximata Holmb.)
To Plants of the World Online (from synonym Carex laxa f. refracta Holmb.)
To the Natural History Museum, London (Carex laxa Wahlenb. BM001067138 type 1)
From editor or global species database
Hosted externally
