Systematic Revision of the Genus Festuca L. in Türkiye

Date

2023-9-11

Author

Erdal, Jelena

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The genus Festuca L. is one of the largest and most widely distributed genera of grasses, and an essential element of grasslands around the world. The main goal of this study was to revise the genus Festuca L. in Türkiye, using standard taxonomic methods and techniques, including field surveys, morphology with micromorphology, anatomy, and ecology to resolve the existing infrageneric and infraspecific taxonomic problems and to provide amended general taxonomic information about taxa and suggestions about conservation and sustainability. During this research, the first comprehensive field studies on the genus Festuca L. all around the country had been performed to locate and collect all known and potential fescue species from their natural habitats. Here, we present a contemporary, revised taxonomic account of the genus Festuca L. in Türkiye, including a new identification key, taxa new to science and, taxa recorded in Türkiye for the first time. As well as, updated species descriptions, diagnostic characters, distribution areas, typification, synonymy, specimens’ citations, phenology, photographs, and information about ecology, endemism, environmental threats, and conservation. We have described one new species Festuca timoniona J. Erdal, G. Yaprak and M. Doğan sp. nov., one new subspecies Festuca woronowii subsp. rizensis J. Erdal, G. Yaprak and M. Doğan subsp. nov., and one new variety Festuca adanensis var. alexandretta J. Erdal, G. Yaprak and M. Doğan var. nov.. Besides, two species, Festuca pseudodalmatica Krajina and Festuca rupicola Heuff. are for the first time recorded in Türkiye. Furthermore, we assigned species status to Festuca rubra L. subsp. pseudorivularis Markgr.-Dann. as Festuca pseudorivularis (Markgr.-Dann.) J. Erdal, G. Yaprak and M. Doğan stat. nov. and Festuca cyllenica Boiss. & Heldr. subsp. uluana Markgr.-Dann., as Festuca uluana (Markgr.-Dann.) J. Erdal, G. Yaprak and M. Doğan stat. nov.. Also, we believe that the presence of the two previously known species in Türkiye, F. sommieri Litard. and F. ziganensis Markgr.-Dann., is doubtful. According to our revision, 59 taxa belonging to the genus Festuca L. are recognized in Türkiye, including 47 species, nine subspecies, and three varieties.

Subject Keywords

Poaceae, Festuca L., Revision, Türkiye

URI

https://hdl.handle.net/11511/105554

Collections

Graduate School of Natural and Applied Sciences, Thesis