Cyperaceae taxon details
Carex lacustris Willd.
1677447 (urn:lsid:marinespecies.org:taxname:1677447)
accepted
Species
Anithista lacustris (Willd.) Raf. · unaccepted
Anithista riparia Raf. · unaccepted
Carex lacustris var. lacustris Willd. · unaccepted
Carex riparia Muhl. · unaccepted
Carex riparia var. lacustris (Willd.) Kük. · unaccepted
- Variety Carex lacustris var. gigantea (Rudge) Pursh accepted as Carex gigantea Rudge
- Variety Carex lacustris var. lacustris Willd. accepted as Carex lacustris Willd.
- Variety Carex lacustris var. laxiflora Dewey accepted as Carex hyalinolepis Steud.
terrestrial
(1805). Sp. Pl., ed. 4 [Willdenow] 4(1), available online at https://www.biodiversitylibrary.org/page/670960#page/1/mode/1up
page(s): 306 [details]
page(s): 306 [details]
Description Plants colonial; rhizomes long-creeping. Culms lateral, coarse, trigonous, 50–135 cm, smooth or somewhat scabrous-angled...
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 306 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 306. 1805 ,...
Description Plants colonial; rhizomes long-creeping. Culms lateral, coarse, trigonous, 50–135 cm, smooth or somewhat scabrous-angled distally. Leaves: basal sheaths reddish purple, strongly fibrillose, bladeless; longest ligules 13–40(–56) mm, much longer than wide; blades glaucous to pale green, M-shaped, (5.5–)8.5–21 mm wide, glabrous. Inflorescences 17–60 cm; proximal 2–4 spikes pistillate, ascending to arching; distal spikes erect; terminal 3–5(–7) spikes staminate. Pistillate scales lanceolate to ovate, apex obtuse to acuminate, glabrous, awn 0.3–3.5 mm, ± scabrous. Perigynia ascending, usually strongly 14–28-veined, narrowly ovoid to narrowly ellipsoid, (4.5–)5.2–7.8 × 1.6–2.5 mm, glabrous; beak obscure, 0.5–1.6 mm, bidentulate, teeth straight, 0.2–0.7(–0.9) mm. 2n = 74. [details]
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 306 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 306. 1805 ,...
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 306 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 306. 1805 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex lacustris Willd.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677447 on 2025-09-14
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Nomenclature
original description
(1805). Sp. Pl., ed. 4 [Willdenow] 4(1), available online at https://www.biodiversitylibrary.org/page/670960#page/1/mode/1up
page(s): 306 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 306 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
Syntype HAL 0103662, geounit Pennsylvania [details]
From editor or global species database
Description Plants colonial; rhizomes long-creeping. Culms lateral, coarse, trigonous, 50–135 cm, smooth or somewhat scabrous-angled distally. Leaves: basal sheaths reddish purple, strongly fibrillose, bladeless; longest ligules 13–40(–56) mm, much longer than wide; blades glaucous to pale green, M-shaped, (5.5–)8.5–21 mm wide, glabrous. Inflorescences 17–60 cm; proximal 2–4 spikes pistillate, ascending to arching; distal spikes erect; terminal 3–5(–7) spikes staminate. Pistillate scales lanceolate to ovate, apex obtuse to acuminate, glabrous, awn 0.3–3.5 mm, ± scabrous. Perigynia ascending, usually strongly 14–28-veined, narrowly ovoid to narrowly ellipsoid, (4.5–)5.2–7.8 × 1.6–2.5 mm, glabrous; beak obscure, 0.5–1.6 mm, bidentulate, teeth straight, 0.2–0.7(–0.9) mm. 2n = 74. [details]Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 306 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 306. 1805 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Anithista lacustris (Willd.) Raf.)
To Biodiversity Heritage Library (1 publication) (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To Biodiversity Heritage Library (1086 publications) (from synonym Carex riparia Muhl.)
To Biodiversity Heritage Library (215 publications)
To European Nucleotide Archive, ENA (Carex lacustris)
To European Nucleotide Archive, ENA (Carex riparia) (from synonym Carex riparia Muhl.)
To GenBank (10 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To International Plant Names Index (IPNI) (from synonym Anithista riparia Raf.)
To International Plant Names Index (IPNI) (from synonym Anithista lacustris (Willd.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex riparia Muhl.)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Anithista lacustris (Willd.) Raf.)
To Plants of the World Online (from synonym Anithista riparia Raf.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex riparia Muhl.)
To Plants of the World Online (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To The Plant List (from synonym Carex lacustris var. lacustris Willd.)
To Biodiversity Heritage Library (1 publication) (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To Biodiversity Heritage Library (1086 publications) (from synonym Carex riparia Muhl.)
To Biodiversity Heritage Library (215 publications)
To European Nucleotide Archive, ENA (Carex lacustris)
To European Nucleotide Archive, ENA (Carex riparia) (from synonym Carex riparia Muhl.)
To GenBank (10 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To International Plant Names Index (IPNI) (from synonym Anithista riparia Raf.)
To International Plant Names Index (IPNI) (from synonym Anithista lacustris (Willd.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex riparia Muhl.)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Anithista lacustris (Willd.) Raf.)
To Plants of the World Online (from synonym Anithista riparia Raf.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex riparia Muhl.)
To Plants of the World Online (from synonym Carex riparia var. lacustris (Willd.) Kük.)
To The Plant List (from synonym Carex lacustris var. lacustris Willd.)
