Vol. 80 No. 2 (2025)
Articles

An ITS phylogeny of Festuca s.l. clarifies the generic circumscription of the broad-leaved complex (Poaceae, Pooideae, Poeae, Loliinae)

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  • Paul M. Peterson,
  • Konstantin Romaschenko,
  • Robert J. Soreng,
  • Francesco Riga
Paul M. Peterson
Department of Botany MRC-166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA
Konstantin Romaschenko
Department of Botany MRC-166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA
Robert J. Soreng
Department of Botany MRC-166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA
Francesco Riga
Wageningen University and Research, Radix, Droevendaalsesteeg 1, 6708 PB Wageningen, Netherlands
DOI: https://doi.org/10.36253/jopt-18242

Published 2025-07-18

Keywords

  • Classification,
  • Drymochloa,
  • Hesperochloa,
  • Leucopoa,
  • Locajonoa,
  • Lolium,
  • molecular phylogenetics,
  • Munnikopoa,
  • Pseudobromus,
  • Valdesochloa,
  • Xanthochloa
    • ...More
    Less

How to Cite

Peterson, P. M., Romaschenko, K., Soreng, R. J., & Riga, F. (2025). An ITS phylogeny of Festuca s.l. clarifies the generic circumscription of the broad-leaved complex (Poaceae, Pooideae, Poeae, Loliinae). Webbia, 80(2), 201–227. https://doi.org/10.36253/jopt-18242

Copyright (c) 2025 Paul M. Peterson, Konstantin Romaschenko, Robert J. Soreng, Francesco Riga

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

To investigate the evolutionary relationships among species of Festuca s.l. we generated a nuclear ribosomal DNA ITS phylogeny recovering 10 strongly supported clades or genera: Drymochloa, Festuca, Leucopoa, Locajonoa, Lolium, Hesperochloa, Munnikopoa gen. nov., Pseudobromus, Valdesochloa gen. nov., and Xanthochloa. We make the necessary 51 new combinations in Drymochloa (D. muelleri, D. pseudeskia, D. scariosa), Festuca (F. albaredae, F. ambilobensis F. lima, F. membranacea subsp. fontqueriana), Hesperochloa (H. aloha, H. altaica, H. amplissima, H. argentina, H. bajacaliforniana, H. campestris, H. dasyclada, H. dichoclada, H. elmeri, H. extremiorientalis, H. hallii, H. hubsugulica, H. modesta, H. molokaiensis, H. nitidula, H. parvigluma, H. pulchella, H. pulchella ssp. jurana, H. quadridentata, H. sinensis, H. sororia, H. spectabilis, H. subulata, H. washingtonica) Leucopoa (L. komarovii), Locajonoa (L. patula), Lolium (L. simensis), Munnikopoa (M. scabra), Pseudobromus (P. brevisetus, P. killickii, P. longipes, P. mekiste), Valdesochloa (V. asperella, V. breviglumis, V. caldasii, V. chiriquensis, V. lugens, V. superba, V. venezuelana), and Xanthochloa (X. baetica, X. durandoi, X. paniculata, X. sclerophylla, X. spadicea); and provide a preliminary key to the genera. Lectotypes are designated for the names Festuca amplissima Rupr., F. costata var. breviseta Nees, F. dichoclada Pilg., F. longipes Stapf, F. modesta Nees, F. nitidula Stapf ex Hook. f., F. patula Desf., F. subulata var. japonica Hack., F. superba Parodi ex Türpe, and Micropyrum albaredae Paunero; and a neotype is designated for Triticum patens Brot.

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