Acta Univ. Agric. Silvic. Mendelianae Brun. 2026, 74(1-2), 39-51 | DOI: 10.11118/actaun.2026.004

The fourth addition to the sedge flora (Carex, Cyperaceae) of the Czech Republic

Radomír Řepka1, Jan Řepka2
1 Department of Forest Botany, Dendrology and Geobiocenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic
2 Černopolní 8, 613 00 Brno, Czech Republic

The article presents two Carex nothospecies new to the flora of the Czech Republic found in 2025 in the field and one rare nothospecies discovered in herbaria, previously mentioned in the Czech Republic. In a locality with exceptional microclimate and vegetation near the Břehyňský rybník pond (northern Bohemia), we found the hybrid Carex aquatilis × C. elata. It was previously reported from Finland and Sweden only as a combination of the parental species names. This is the first find of this hybrid in the heart of Central Europe, far from its nearest localities in northern Europe. In this article we formally described and named the hybrid as C. ×aquosa, nothosp. nov. We publish here the finding of Carex ×beckmanniana herbarium specimens (= C. riparia × C. rostrata) at two localities in Bohemia and one locality in Moravia, and of C. ×biharica (= C. canescens × C. echinata) at one locality in Šumava Mts.

Keywords: sedge hybrids, Carex ×aquosa, Carex ×beckmanniana, Carex ×biharica

Received: January 15, 2026; Revised: February 16, 2026; Accepted: March 13, 2026; Published: May 1, 2026  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Řepka, R., & Řepka, J. (2026). The fourth addition to the sedge flora (Carex, Cyperaceae) of the Czech Republic. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 74(1-2), 39-51. doi: 10.11118/actaun.2026.004
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. BAJZÁTH, J. 1996. Plant macrofossils from Hungarian Pleistocene II. Angiospermatophyta in Györújfalu, West Hungary. Annals hist.-nat. Mus. natn. hung. 88, 5-20.
    2. BENNETT, A. 1897: Notes on British plants, 2. Carex. Journal of Botany. 35, 244-252.
    3. ČELAKOVSKÝ, L. 1867-1881. Prodromus der Flora von Böhmen I-IV. Prag: Arch. Naturwiss. Landesdurchforsch. Böhmens (in German).
    4. DOSTÁL, J. 1958. Klíč k úplné květeně ČSR [The key to the complete flora of Czechoslovakia]. Prague: Nakladatelství Československé akademie věd (in Czech).
    5. FIGERT, E. 1889. Carex riparia × rostrata n. hybr. Carex Beckmanniana m. Deutsche Bot. Monatsschr. 7: 185-186 (in German).
    6. FIRBAS, F., GRAHMANN, R. 1928. Über jungdiluviale und alluviale Torflager in der Grube Marga bei Senftenberg (Niederlausitz). Abhandlungen der mathematisch-physischen Klasse der Sächsischen Akademie der Wissenschaften. 40(4), 1-63 (in German).
    7. GBIF, 2025. Global Biodiversity Information Facility. [Accessed: 15 December 2025] https://www.gbif.org
    8. GRULICH, V., ŘEPKA, R., ŠTĚPÁNKOVÁ, J. 2024. Carex L. - ostřice. In: ŠTĚPÁNKOVÁ, J., KAPLAN, Z., CHRTEK, J. jr. (Eds.). Květena České republiky [Flora of the Czech Republic]. Vol. 9: 176-360. Prague: Academia (in Czech).
    9. HOLUB, J. 1960. Nové nebo méně známé rostliny květeny ČSSR [New or lesser-known plants of the flora of the Czechoslovakia]. Preslia. 32, 423-426 (in Czech).
    10. HOLUB, J. 1964. Novinky v systematice. Carex vulpina L. a Carex otrubae Podp. [Novelties in systematics. Carex vulpina L. and Carex otrubae Podp.]. Zpravodaj jihočeských botaniků. 5(1), 3-4 (in Czech).
    11. CHYTRÝ, M. (Ed.). 2011. Vegetace České republiky [Vegetation of the Czech Republic] Vol. 3. Prague: Academia (in Czech).
    12. JERMY, A. C., SIMPSON, D. A., FOLEY, M. J. Y., PORTER, M. S. 2007. Sedges of the British Isles. BSBI Handbook. No. 1. 3rd Edition. London: Botanical Society of the British Isles.
    13. JÍLEK, B. 1929. Carex L. subsect. Vulgares Aschers. Studie systematická a teratologická [Carex L. subsect. Vulgares Aschers. Systematic and teratologic study]. Spisy Přírod. Fak. Karlovy Univ. Praha. 92, 1-24 (in Czech).
    14. KAPLAN, Z., DANIHELKA, J., CHRTEK, J. jun., KIRSCHNER, J., ŠTECH, M., ŠTĚPÁNEK, J. (Eds.). 2019. Klíč ke květeně České republiky [Key to the flora of the Czech Republic]. 2nd Edition. Prague: Academia.
    15. KIFFE, K. 1997. Der Erstfund einer Carex aquatilis-Hybride in Mitteleuropa: ein Vorkommen von Carex acuta L. × C. aquatilis Wahlenb. in Nordwestniedersachsen. Flor. Rundbr. 31(2), 132-135 (in German).
    16. KIFFE, K., ITJESHORST, W., WEYER VAN DE, K. 1999. Die Carex rostrata-Hybriden der "Standardliste der Farn- und Blütenpflanzen Deutschlands": I. Aktuelle Vorkommen und Merkmale. Gleditschia. 27(1/2), 3-13 (in German).
    17. KOOPMAN, J. 2022. Carex Europaea. The genus Carex L. (Cyperaceae) in Europe 1. Accepted names, hybrids, synonyms, distribution, chromosome numbers. 3rd Edition. Weikersheim: Margraf Publishers.
    18. KRAHULEC, F., ŘEPKA, R., KRAK, K., ŘEPKA, J. 2026. An overlooked glacial relic Carex aquatilis and its hybrids in the flora of the Krkonoše/Karkonosze Mts. (Czechia and Poland): an analyse. Preslia. 98 (under review).
    19. KUBÁT, K., HROUDA, L., CHRTEK, J. jun, KAPLAN, Z., KIRSCHNER, J., ŠTĚPÁNEK, J. (Eds.). 2002. Klíč ke květeně České republiky [Key to the Flora of the Czech Republic]. Prague: Academia.
    20. KUČERA, J., VÁŇA, J., HRADÍLEK, Z. 2012. Bryophyte flora of the Czech Republic: updated checklist and Red List and a brief analysis. Preslia. 84, 813-850.
    21. LAJI.FI. 2025. Finnish Biodiversity Information Facility. Laji.fi. [Accessed: 15 December 2025] https://laji.fi/en
    22. LUDWIG, W. 1954. Über einige verkannte Arten der deutschen Flora: Glyceria declinata Bréb., Carex otrubae Podp. und Rorippa microphylla (Rchb.) Hyl. Bayerische Botanische Gesellschaft, 30: 84-87 (in German).
    23. NYBG. 2025. Index herbariorum. NYBG Steere Herbarium. New York Botanical Garden. [Accessed: 15 December 2025] http://sweetgum.nybg.org/science/ih
    24. PLADIAS. 2025. Databáze české flóry a vegetace [Database of the Czech Flora and Vegetation]. Pladias. [Accessed: 15 December 2025] www.pladias.cz (in Czech).
    25. PODPĚRA, J. 1922. Plantae Moravicae novae vel minus cognitae. Spisy přírod. Fak. Masarykovy Univ. 12, 1-35 (in Latin).
    26. PODPĚRA, J. 1930. Květena Moravy ve vztazích systematických a geobotanických [Flora of Moravia in systematic and geobotanical relationships]. Práce Moravské Přírodovědné Společnosti. Brno, Fasc. 6/3: 57-415, [1928]. (in Czech).
    27. POLÍVKA, F., DOMIN, K., PODPĚRA, J. 1928. Klíč k úplné květeně československé [Key to the total Flora of the Czechoslovakia]. Olomouc: Promberger (in Czech).
    28. RYBNÍČKOVÁ, E., RYBNÍČEK, K. 1972. Erste Ergebnisse palaegeobotanischer Untersuchungen des Moores bei Vracov, Südmähren. Folia Geobot. Phytotax. 7, 285-308 (in German). Go to original source...
    29. ŘEPKA, R. 2024. Three new Carex nothospecies (Cyperaceae) discovered in the Czech Republic. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunnensis. 72(1-2), 41-50. Go to original source...
    30. ŘEPKA, R., ŘEPKA, J. 2025. The third addition to the sedge flora (Carex, Cyperaceae) of the Czech Republic. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. 73(2), 105-114. Go to original source...
    31. ŘEPKA, R., ŘEPKA, J., ČERMÁK, M. 2024. Přehlížený kříženec Carex ×sooi (C. acutiformis × C. riparia) nalezen v České republice [Overlooked hybrid Carex ×sooi (C. acutiformis × C. riparia) discovered in the Czech Republic]. Bulletin of the Czech Botanical Society. 59(1), 25-40 (in Czech).
    32. ŘEPKA, R., TARAŠKA, V. 2022. Carex ×gogelana Podp.: clarification of its identity and typification of the name. Acta Musei Moraviae, Sci. biol. 107, 49-54.
    33. ŘEPKA, R., TARAŠKA, V. 2023. Typification of three Carex nothospecies names dedicated to Czech botanists by J. Podpěra. Phytotaxa. 618(2), 172-180. Go to original source...
    34. SIMONKAI, L. 1887. Enumeratio Florae Transsilvanicae vesculosae critica. Budapest: Kiadja a Kir. Magyar Természettudományi Társulat (in Latin).
    35. SLU ARTDATABANKEN. 2025. Artfakta. [Accessed: 15 December 2025] https://artfakta.se
    36. SÖYRINKI, N., TOIVONEN, H. 1983. Carex aquatilis × elata löydetty Ruovedeltä (EH). Memoranda Soc. Fauna Flora Fennica. 59: 61-64 (in Finnish).
    37. STACE, C. A., PRESTON, C. D., PEARMAN, D. A. 2015. Hybrid Flora of the British Isles. Bristol: Botanical Society of Britain and Ireland.
    38. SYLVÉN, N. 1963. Det skandinaviska flora-områdets Carices distigmaticae. Opera Botanica. 8, 1-161 (in Swedish).

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY NC ND 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content