Graduation Date

Spring 2020

Document Type



Master of Science degree with a major in Biology

Committee Chair Name

Dr. Terry W. Henkel

Committee Chair Affiliation

HSU Faculty or Staff

Second Committee Member Name

Dr. M. Catherine Aime

Second Committee Member Affiliation

Community Member or Outside Professional

Third Committee Member Name

Dr. Erik Jules

Third Committee Member Affiliation

HSU Faculty or Staff

Fourth Committee Member Name

Dr. Mihai Tomescu

Fourth Committee Member Affiliation

HSU Faculty or Staff

Subject Categories



This study is a systematic assessment of ten species of ectomycorrhizal fungi of the genus Amanita (Amanitaceae, Agaricales, Basidiomycota) from the lowland tropical rainforests of the Guiana Shield and Central Africa. Fungi were collected in each of the above regions, analyzed morphologically, and compared to the literature on Amanita diversity worldwide. All species addressed herein are given full formal taxonomic descriptions including complete macro- and microscopic character profiles, habit, habitat, and distribution. Phylogenetic assessments using ribosomal DNA and protein coding genes are provided for Guiana Shield taxa, and sequence data for two non-protein coding regions, the internal transcribed spacer (ITS) and nuclear ribosomal large subunit (nrLSU) are provided for Central African taxa. to support infrageneric placement of each taxon. Chapter one describes three new species from the Guiana Shield: A. cyanochlorinosma, A. fulvoalba, and A. guyanensis. Chapter two describes four epitypes of otherwise poorly known Central African species: A. echinulata, A. fulvopulverulenta, A. robusta, and A. bingensis, and three new species from Cameroon: A. minima, A. leucolamellata, and A. goossens-fontanae. Each chapter is a manuscript that has been published in, or submitted to, a peer-reviewed mycological journal.

Citation Style


Included in

Biodiversity Commons


Thesis/Project Location