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Cyperaceae taxon details

Schoenoplectus ×flevensis (D.Bakker) Lansdown & Rumsey

1681389  (urn:lsid:marinespecies.org:taxname:1681389)

accepted
Species
terrestrial
(of Scirpus lacustris subsp. flevensis D.Bakker) Bakker, D. (1954). Miscellaneous notes on Scirpus lacustris L. s.l. in the Netherlands. Acta Botanica Neerlandica, 3(4): 426-445.
page(s): 434 [details] 
Description Perennial, rhizomatous forming extensive stands. Stems (125-)142-194 cm high × (0.7-)0.6-1.2 cm diameter, terete,...  
Description Perennial, rhizomatous forming extensive stands. Stems (125-)142-194 cm high × (0.7-)0.6-1.2 cm diameter, terete, glaucous. Leaves of terrestrial plants reduced to sheaths, pale brown, free part of sheath 1.4-120 cm, leaves of plants growing inwater not seen. Inflorescence branched, with 16-55 spikelets, on peduncles 0-47(-51) mm, secondary peduncles 0-21(-23) mm bearing 1-5 spikes, Inflorescence lowest bract 3.2-4.9(-5) mm, brown and dry. Spikes 7.1-14.8mm, ovate to ovate-lanceolate, 13-28 flowered. Glumes (Fig. 2) 3.6-4.3 mm, ovate; smooth, with glabrous margins, denticulate to the apex, which is not emarginate; pale brown, scarious to the base, 1-nerved, usually with a green central band and narrow scarious margins, sometimes absent. Filaments 2.8-3.8 mmm, anthers 1.2-1.8 mm, yellow. Styles 2.4-2.9 mm, 2-3-fid. Achenes 2.2-2.8 mm not including beak 0.1-0.3 mm, obovate, broadly trigonous, with small irregularly distributed wrinkles visible under magnification, yellowish when immature, dark brown to blackish when mature, shining; perianth bristles 5, 2.1-2.8 mm. [details]

Taxonomic remark Schoenoplectus lacustris (L.) Palla x Schoenoplectus tabernaemontani (C.C. Gmel.) Palla  
Taxonomic remark Schoenoplectus lacustris (L.) Palla x Schoenoplectus tabernaemontani (C.C. Gmel.) Palla [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Schoenoplectus ×flevensis (D.Bakker) Lansdown & Rumsey. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681389 on 2025-09-12
Date
action
by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-21 16:48:17Z
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Nomenclature

original description (of Scirpus lacustris subsp. flevensis D.Bakker) Bakker, D. (1954). Miscellaneous notes on Scirpus lacustris L. s.l. in the Netherlands. Acta Botanica Neerlandica, 3(4): 426-445.
page(s): 434 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Lansdown, R. V. & Rumsey, F. (2020). Schoenoplectus× flevensis(S. lacustris× S. tabernaemontani, Cyperaceae) in Britain. <em>British & Irish Botany.</em> 2(3): 190-201.
page(s): 191 [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Description Perennial, rhizomatous forming extensive stands. Stems (125-)142-194 cm high × (0.7-)0.6-1.2 cm diameter, terete, glaucous. Leaves of terrestrial plants reduced to sheaths, pale brown, free part of sheath 1.4-120 cm, leaves of plants growing inwater not seen. Inflorescence branched, with 16-55 spikelets, on peduncles 0-47(-51) mm, secondary peduncles 0-21(-23) mm bearing 1-5 spikes, Inflorescence lowest bract 3.2-4.9(-5) mm, brown and dry. Spikes 7.1-14.8mm, ovate to ovate-lanceolate, 13-28 flowered. Glumes (Fig. 2) 3.6-4.3 mm, ovate; smooth, with glabrous margins, denticulate to the apex, which is not emarginate; pale brown, scarious to the base, 1-nerved, usually with a green central band and narrow scarious margins, sometimes absent. Filaments 2.8-3.8 mmm, anthers 1.2-1.8 mm, yellow. Styles 2.4-2.9 mm, 2-3-fid. Achenes 2.2-2.8 mm not including beak 0.1-0.3 mm, obovate, broadly trigonous, with small irregularly distributed wrinkles visible under magnification, yellowish when immature, dark brown to blackish when mature, shining; perianth bristles 5, 2.1-2.8 mm. [details]

Taxonomic remark Schoenoplectus lacustris (L.) Palla x Schoenoplectus tabernaemontani (C.C. Gmel.) Palla [details]
    Definitions

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