Graduate Thesis Or Dissertation
 

Systematics of the genus Otidea in the Pacific Northwest

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  • The fungal ascomycete genus Otidea as represented in the Pacific Northwest of North America includes eight well known species and two poorly-known species. Cladistic analysis utilizing characters from ribosomal DNA and morphology allowed the development of a robust phylogenetic species concept for Otidea. The combination of characters from the ribosomal DNA internal transcribed spacer region and those characters coded from morphological descriptions proved both useful and robust towards the elucidation of a phylogenetic species concept. The resulting phylogenetic species concept was then applied to known members of the genus, and species descriptions revised to account for additional data collected in the course of this study. The following species of Otidea are described in detail in this work: 0. alutacea, 0. concinna, 0. leporina, 0. onotica, 0. rainierensis, 0. smithii, 0. tuomikoskii and 0. umbrina. Revised keys to the genus for both fresh and dried material are presented in Chapter Three. 0. alutacea, 0. leporina, 0. rainierensis, 0. smithii and 0. umbrina are reported as rare in the Pacific Northwest due to the relatively small number of collections made of each in the course of this study.
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