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Cyperaceae taxon details

Carex flacca Schreb.

To the Natural History Museum, London (Carex flacca Schreb. BM001067079 type 1)
To the Natural History Museum, London (Carex flacca Schreb. BM001067079 type 1)

426068  (urn:lsid:marinespecies.org:taxname:426068)

  1. Biota
  2. Plantae (Kingdom)
  3. Viridiplantae (Subkingdom)
  4. Streptophyta (Infrakingdom)
  5. Tracheophyta (Phylum (Division))
  6. Spermatophytina (Subphylum (Subdivision))
  7. Magnoliopsida (Class)
  8. Lilianae (Superorder)
  9. Poales (Order)
  10. Cyperaceae (Family)
  11. Cariceae (Tribe)
  12. Carex (Genus)
  13. Carex subg. Carex (Subgenus)
  14. Carex sect. FlaccaClade (Section)
  15. Carex flacca (Species)
accepted
Species

Ordering

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Children Display

  1. Subspecies Carex flacca subsp. erythrostachys (Hoppe) Holub
  2. Subspecies Carex flacca subsp. flacca Schreb.
  3. Forma Carex flacca f. castriferrei Soó accepted as Carex flacca subsp. flacca Schreb.
  4. Forma Carex flacca f. chlorocarpa R.Keller accepted as Carex flacca subsp. flacca Schreb.
  5. Forma Carex flacca f. melanostachya R.Uechtr. accepted as Carex flacca subsp. flacca Schreb.
  6. Forma Carex flacca f. pallida Beck accepted as Carex flacca subsp. flacca Schreb.
  7. Forma Carex flacca f. tenuicula (Martrin-Donos) Soó accepted as Carex flacca subsp. flacca Schreb.
  8. Subspecies Carex flacca subsp. claviformis (Hoppe) Schinz & Thell. accepted as Carex flacca subsp. flacca Schreb.
  9. Subspecies Carex flacca subsp. claviformis (Hoppe) Malag. accepted as Carex flacca Schreb.
  10. Subspecies Carex flacca subsp. cuspidata (Host) Schinz & R.Keller accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  11. Subspecies Carex flacca subsp. cuspidata (Host) Vicioso accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  12. Subspecies Carex flacca subsp. praetutiana (Parl.) Holub accepted as Carex flacca subsp. flacca Schreb.
  13. Subspecies Carex flacca subsp. serrulata (Biv.) Greuter accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  14. Subspecies Carex flacca subsp. serrulata (Biv.) Malag. accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  15. Subvariety Carex flacca subvar. cuspidata (Host) Maire & Weiller accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  16. Variety Carex flacca var. acuminata (Trab.) C.Vicioso accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  17. Variety Carex flacca var. alpina Heuff. accepted as Carex flacca subsp. flacca Schreb.
  18. Variety Carex flacca var. arrecta (Drejer) Briq. accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  19. Variety Carex flacca var. attenuata (Ball) Emb. & Maire accepted as Carex flacca subsp. flacca Schreb.
  20. Variety Carex flacca var. basigyna Beck accepted as Carex flacca subsp. flacca Schreb.
  21. Variety Carex flacca var. bulbosa (Drejer) C.Vicioso accepted as Carex flacca subsp. flacca Schreb.
  22. Variety Carex flacca var. chlorocarpa (R.Keller) R.Keller accepted as Carex flacca subsp. flacca Schreb.
  23. Variety Carex flacca var. cuspidata (Host) C.Vicioso accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  24. Variety Carex flacca var. dinarica Heuff. accepted as Carex flacca subsp. flacca Schreb.
  25. Variety Carex flacca var. erecta Heuff. accepted as Carex flacca subsp. flacca Schreb.
  26. Variety Carex flacca var. erythrostachys (Hoppe) C.Vicioso accepted as Carex flacca subsp. erythrostachys (Hoppe) Holub
  27. Variety Carex flacca var. glauca Asch. & Graebn. accepted as Carex flacca subsp. flacca Schreb.
  28. Variety Carex flacca var. laxiflora (Schur) C.Vicioso accepted as Carex flacca subsp. flacca Schreb.
  29. Variety Carex flacca var. leiocarpa (Willk.) C.Vicioso accepted as Carex flacca subsp. flacca Schreb.
  30. Variety Carex flacca var. oogyna Murr accepted as Carex flacca subsp. flacca Schreb.
  31. Variety Carex flacca var. silvatica (Asch. & Graebn.) C.Vicioso accepted as Carex flacca subsp. flacca Schreb.
  32. Variety Carex flacca var. thuringiaca (Willd.) C.Vicioso accepted as Carex flacca subsp. flacca Schreb.
marine, brackish, fresh, terrestrial
Schreber, J. C. (1771). Spicilegium florae Lipsicae. , available online at https://www.biodiversitylibrary.org/page/5767532#page/5/mode/1up
page(s): 178 [details] 
Description Rhizomes often far-creeping, wiry; shoots loosely tufted; roots pale grey-brown; scales purplish-brown or red-brown,...  
Description Rhizomes often far-creeping, wiry; shoots loosely tufted; roots pale grey-brown; scales purplish-brown or red-brown, persistent. Stems 10–60 cm, rigid, trigonous-subterete. Leaves up to 50 cm × 1.5–4 mm, rigid, often arcuate, flat, gradually tapering to a fine point, glauco-pruinose above when young, becoming dull green, glaucous and densely mamillate beneath, with narrowly spaced veins on abaxial side, persisting as dark or rich brown litter; hypostomous; sheaths becoming dark brown, often flushed wine-red, persistent, entire, with inner face hyaline-brown, coarsely striate; apex straight or concave; ligule 2–3 mm long, rounded, tubular, with free portion c. 0.4–1 mm wide; apex notched. Inflorescence 1/5–1/3 length of stem; bracts leaf-like, lowest ± equal to inflorescence; sheath 0–3(–10) mm long. Male spikes (1–)2–3, 1–3.5 cm; male glumes 3–4 mm, oblanceolate, purple-brown, with pale midrib and hyaline margin; apex rounded or subacute. Female spikes 1–5, contiguous, 1.5–5.5 cm, cylindric, upper erect, subsessile, often 3 at top, lower ± nodding; peduncles up to as long as spike, rough, half ensheathed; female glumes 2–3 mm, oblong-ovate, purple-black, pruinose, with a wide, paler midrib and hyaline margin; apex obtuse to subacute. Utricles 2–3 mm, broadly ellipsoid to obovoid, often inflated on adaxial side, minutely papillose or scabrid, yellow-green, often turning deep purple-black; beak 0.2 mm, truncate; stigmas 3; nut ellipsoid, trigonous. [details]

Description Rizoma de entrenudos largos, no muy grueso. Tallos fértiles (10)20–60(95) cm, lisos o escábridos, trígonos. Hojas...  
Description Rizoma de entrenudos largos, no muy grueso. Tallos fértiles (10)20–60(95) cm, lisos o escábridos, trígonos. Hojas 1(8)3–5(7) mm de anchura, generalmente de menor longitud que los tallos, en ocasiones casi igual, planas, ásperas en los bordes, bastante rígidas, glauces en ambas caras o sólo por el envés; lígula 2–3 mm, de ápice obtuso, redondeado o emarginado, de bordes convulsos; sin antelígula; vainas basales con limbo desarrollado, pardas, purpúreas o rojizas, ± enteras. Bráctea inferior folácea, igual, poco mayor o menor que la inflorescencia, envainante o no. Espigas masculinas (1)2–3(5), de (8)15–50(70) mm, ± fusiformes; espigas femeninas 2–4, de (7)15–50(100) mm, ovoides o cilíndricas, densifloras, muy raramente laxifloras, ± separadas, a veces la(s) superior(es) andrógina(s), en ocasiones ramificadas en la base, decaídas sesiles y erectas a largamente pedunculadas y colgantes. Glumas masculinas ovadas, agudas o mucronadas, de color pardo rojizo oscuro, con nervio medio verde y margen escarioso de anchura variable; glumas femeninas ovales, de ápice agudo o largaristado o mucronado, de longitud menor o mayor que los utrículos, de color pardo rojizo o pardo púrpura muy oscuro con margen escarioso o sin él. Utrículos (2,4)2,5–3,5(4) × 1–2 mm, suberectos, ovoides, obovados o suborbiculares, irregularmente trígonos, papilosos, híspidos o no, blanquecinos, pardos, verdosos o negros, con los nervios no o apenas evidentes, bruscamente estrechados, rara vez gradualmente atenuados en un corto pico hasta de 0,3 mm, de ápice truncado. Aquenios 1,5–2,2 × 0,9–1,4 mm, de contorno obovado, trígonos, pardos. 2n = 38, 76, 90.* [details]

Description Culms obtusely trigonous, to 35 cm × 1.5 mm, scabrous distally. Leaves: sheaths with blades, to 2 cm, rough, fronts...  
Description Culms obtusely trigonous, to 35 cm × 1.5 mm, scabrous distally. Leaves: sheaths with blades, to 2 cm, rough, fronts spotted red-brown apically, ladder-fibrillose, orifice red-brown, slightly prolonged beyond blade and sheath, leathery; blades 35 cm × 3 mm, margins rough; proximal blades blue-green, densely papillose. Inflorescences to 10 cm; peduncle of staminate spike to 2.5 cm; proximal bracts about equaling inflorescences; staminate spikes 1–3; pistillate spikes 2–3, to 4 cm × 4 mm. Scales red-brown with green midrib and hyaline margins, obovate, apex obtuse or with short mucro to 0.3 mm, equaling perigynia and narrower. Anthers to 2.5 mm. Perigynia ascending, green, spotted red-brown on distal 1/2, sessile, 2.2 × 1.4 mm; beak orifice purple-brown, glabrous. Achenes brown, 1.6 × 1.1 mm. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Spic. Fl. Lips. appendix [178]. 1771 [9 Jul-25 Oct 1771] to Spic. Fl....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Spic. Fl. Lips. appendix [178]. 1771 [9 Jul-25 Oct 1771] to Spic. Fl. Lips. , App.: 178 (1771), 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 flacca Schreb.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=426068 on 2026-05-13
Date
action
by
2009-10-26 06:46:35Z
created
Decock, Wim
2023-09-05 10:00:04Z
checked
Jiménez-Mejías, Pedro
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed
Márquez-Corro, José Ignacio

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


Nomenclature

original description Schreber, J. C. (1771). Spicilegium florae Lipsicae. , available online at https://www.biodiversitylibrary.org/page/5767532#page/5/mode/1up
page(s): 178 [details] 

basis of record Provoost, S.; Bonte, D. (Ed.) (2004). Animated dunes: a view of biodiversity at the Flemish coast [Levende duinen: een overzicht van de biodiversiteit aan de Vlaamse kust]. Mededelingen van het Instituut voor Natuurbehoud, 22. Instituut voor Natuurbehoud: Brussel, Belgium. ISBN 90-403-0205-7. 416, ill., appendices pp. (look up in IMIS) [details] 

Taxonomy

taxonomy source Jermy, A.C.; Simpson, D.A.; Foley, M.J.Y.; Porter, M.S. (2007). Sedges of the British Isles. 554 pp. Botanical Society of Britain & Ireland, United Kingdom. [details] Available for editors  PDF available [request]

taxonomy source Luceño, M., Castroviejo, S., Jiménez-Mejías, P. (2008). Cyperaceae. In: Castroviejo, Luceño, M., Galán, A., Jiménez-Mejías, P., Cabezas, F., Medina, L. (eds). Flora iberica. Plantas vasculares de la Península Ibérica e Islas Baleares. Vol. XVIII. Madrid: CSIC., available online at https://bibdigital.rjb.csic.es/records/item/12958-flora-iberica-vol-18-cyperaceae-pontederiaceae?offset=, http://www.floraiberica.es/PHP/familias_lista_.php?familia=Cyperaceae [details] 

Other

context source (RAS) Australian Antarctic Data Centre. , available online at https://data.aad.gov.au/aadc/biodiversity/ [details] 

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

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Syntype BM 001067079, geounit France [details]
From editor or global species database
Description Rhizomes often far-creeping, wiry; shoots loosely tufted; roots pale grey-brown; scales purplish-brown or red-brown, persistent. Stems 10–60 cm, rigid, trigonous-subterete. Leaves up to 50 cm × 1.5–4 mm, rigid, often arcuate, flat, gradually tapering to a fine point, glauco-pruinose above when young, becoming dull green, glaucous and densely mamillate beneath, with narrowly spaced veins on abaxial side, persisting as dark or rich brown litter; hypostomous; sheaths becoming dark brown, often flushed wine-red, persistent, entire, with inner face hyaline-brown, coarsely striate; apex straight or concave; ligule 2–3 mm long, rounded, tubular, with free portion c. 0.4–1 mm wide; apex notched. Inflorescence 1/5–1/3 length of stem; bracts leaf-like, lowest ± equal to inflorescence; sheath 0–3(–10) mm long. Male spikes (1–)2–3, 1–3.5 cm; male glumes 3–4 mm, oblanceolate, purple-brown, with pale midrib and hyaline margin; apex rounded or subacute. Female spikes 1–5, contiguous, 1.5–5.5 cm, cylindric, upper erect, subsessile, often 3 at top, lower ± nodding; peduncles up to as long as spike, rough, half ensheathed; female glumes 2–3 mm, oblong-ovate, purple-black, pruinose, with a wide, paler midrib and hyaline margin; apex obtuse to subacute. Utricles 2–3 mm, broadly ellipsoid to obovoid, often inflated on adaxial side, minutely papillose or scabrid, yellow-green, often turning deep purple-black; beak 0.2 mm, truncate; stigmas 3; nut ellipsoid, trigonous. [details]

Description Rizoma de entrenudos largos, no muy grueso. Tallos fértiles (10)20–60(95) cm, lisos o escábridos, trígonos. Hojas 1(8)3–5(7) mm de anchura, generalmente de menor longitud que los tallos, en ocasiones casi igual, planas, ásperas en los bordes, bastante rígidas, glauces en ambas caras o sólo por el envés; lígula 2–3 mm, de ápice obtuso, redondeado o emarginado, de bordes convulsos; sin antelígula; vainas basales con limbo desarrollado, pardas, purpúreas o rojizas, ± enteras. Bráctea inferior folácea, igual, poco mayor o menor que la inflorescencia, envainante o no. Espigas masculinas (1)2–3(5), de (8)15–50(70) mm, ± fusiformes; espigas femeninas 2–4, de (7)15–50(100) mm, ovoides o cilíndricas, densifloras, muy raramente laxifloras, ± separadas, a veces la(s) superior(es) andrógina(s), en ocasiones ramificadas en la base, decaídas sesiles y erectas a largamente pedunculadas y colgantes. Glumas masculinas ovadas, agudas o mucronadas, de color pardo rojizo oscuro, con nervio medio verde y margen escarioso de anchura variable; glumas femeninas ovales, de ápice agudo o largaristado o mucronado, de longitud menor o mayor que los utrículos, de color pardo rojizo o pardo púrpura muy oscuro con margen escarioso o sin él. Utrículos (2,4)2,5–3,5(4) × 1–2 mm, suberectos, ovoides, obovados o suborbiculares, irregularmente trígonos, papilosos, híspidos o no, blanquecinos, pardos, verdosos o negros, con los nervios no o apenas evidentes, bruscamente estrechados, rara vez gradualmente atenuados en un corto pico hasta de 0,3 mm, de ápice truncado. Aquenios 1,5–2,2 × 0,9–1,4 mm, de contorno obovado, trígonos, pardos. 2n = 38, 76, 90.* [details]

Description Culms obtusely trigonous, to 35 cm × 1.5 mm, scabrous distally. Leaves: sheaths with blades, to 2 cm, rough, fronts spotted red-brown apically, ladder-fibrillose, orifice red-brown, slightly prolonged beyond blade and sheath, leathery; blades 35 cm × 3 mm, margins rough; proximal blades blue-green, densely papillose. Inflorescences to 10 cm; peduncle of staminate spike to 2.5 cm; proximal bracts about equaling inflorescences; staminate spikes 1–3; pistillate spikes 2–3, to 4 cm × 4 mm. Scales red-brown with green midrib and hyaline margins, obovate, apex obtuse or with short mucro to 0.3 mm, equaling perigynia and narrower. Anthers to 2.5 mm. Perigynia ascending, green, spotted red-brown on distal 1/2, sessile, 2.2 × 1.4 mm; beak orifice purple-brown, glabrous. Achenes brown, 1.6 × 1.1 mm. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Spic. Fl. Lips. appendix [178]. 1771 [9 Jul-25 Oct 1771] to Spic. Fl. Lips. , App.: 178 (1771), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]

Translation Rhizome with long internodes, not very thick. Fertile stems (10)20–60(95) cm, smooth or scabrid, trigonous. Leaves 1(8)3–5(7) mm wide, generally shorter than the stems, occasionally almost equalling them, flat, rough at the margins, rather rigid, glaucous on both surfaces or only beneath; ligule 2–3 mm, with obtuse, rounded or emarginate apex, with convulsive margins; without antiligule; basal sheaths with developed blade, brown, purplish or reddish, ± entire. Lower bract leaf-like, equal to, slightly longer or shorter than the inflorescence, sheathing or not. Male spikes (1)2–3(5), (8)15–50(70) mm long, ± fusiform; female spikes 2–4, (7)15–50(100) mm long, ovoid or cylindrical, densely flowered, very rarely lax-flowered, ± separated, sometimes the upper one(s) androgynous, occasionally branched at the base, decumbent, sessile or erect, to long-pedunculate and pendulous. Male glumes ovate, acute or mucronate, dark reddish-brown, with a green midrib and a scarious margin of variable width; female glumes oval, with acute, long-aristate or mucronate apex, shorter or longer than the utricles, reddish-brown to very dark purplish-brown, with or without a scarious margin. Utricles (2.4)2.5–3.5(4) × 1–2 mm, suberect, ovoid, obovoid or suborbicular, irregularly trigonous, papillose, hispid or not, whitish, brown, greenish or black, with nerves not or scarcely evident, abruptly narrowed, rarely gradually attenuate into a short beak up to 0.3 mm long, with truncate apex. Achenes 1.5–2.2 × 0.9–1.4 mm, obovoid in outline, trigonous, brown. 2n = 38, 76, 90.* [details]
    Definitions

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LanguageName 
Dutch zeegroene zegge  [details]
English glaucous sedge  [details]
Norwegian Bokmål blåstarr  [details]
Norwegian Nynorsk blåstorr  [details]
Scottish Gaelic cíb liathghorm  [details]
Swedish slankstarr  [details]
Welsh hesgen lwydlas y calch  [details]
To Barcode of Life (34 barcodes) 
To Biodiversity Heritage Library (317 publications) 
To European Nucleotide Archive, ENA (Carex flacca) 
To GenBank (44 nucleotides; 75 proteins) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Carex flacca subsp. claviformis (Hoppe) Malag.)
To NHMUK collection (Carex flacca Schreb.; NHMUK:ecatalogue:5023380) 
To Plants of the World Online 
To Plants of the World Online (from synonym Carex glauca var. sylvatica Asch. & Graebn.)
To the Natural History Museum, London (Carex flacca Schreb. BM001067079 type 1) 
To The Plant List (from synonym Carex flacca subsp. claviformis (Hoppe) Malag.)
To ITIS
From editor or global species database
Unreviewed
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