Carex ×kneuckeri, a hybrid new for central Europe and neotypification of this name

Jacob Koopman 1 , Paweł Kalinowski 2 , Michael Stech 4 3 & Helena Więcław 5

Affiliations

  1. ul. Kochanowskiego 27, 73-200 Choszczno, Poland
  2. Institute of Technology and Life Sciences, Falenty, Al. Hrabska 3, 05-090 Raszyn, Poland
  3. Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, Netherlands
  4. Leiden University, Leiden, Netherlands
  5. Department of Plant Taxonomy and Phytogeography, Faculty of Biology, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland

Published: 20 June 2019 , https://doi.org/10.23855/preslia.2019.161

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Abstract

Carex ×kneuckeri (C. hirta × C. rostrata) is reported here for the first time to occur in south-eastern Poland and central Europe. Although both parents are widespread and common species in Europe, the hybrid is extremely rare or overlooked, worldwide only known from France (one locality), Sweden (two localities) and now also Poland (one locality). Carex ×kneuckeri has the general appearance of C. rostrata, but has hairy utricles and hairy leaf sheaths, like C. hirta. Phylogenetic analysis of plastid matK and (cloned) nuclear ribosomal ITS sequences indicates a close relationship of C. ×kneuckeri with C. rostrata. The ITS alignment shows complex mutational patterns and a clear dominance of the C. rostrata sequence type, but also an indication of the presence of the C. hirta sequence type. As no original material of C. ×kneuckeri could be traced, a specimen from the Swedish Museum of Natural History (S) is chosen here as the neotype for this name.

Keywords

Carex hirta, Carex rostrata, distribution, habitat, ITS, matK, morphology, neotype, new locality, sedges

How to cite

Koopman J., Kalinowski P., Stech M. & Więcław H. (2019) Carex ×kneuckeri, a hybrid new for central Europe and neotypification of this name. – Preslia 91: 161–177, https://doi.org/10.23855/preslia.2019.161