Amanita species within section Caesareae from the highlands of Laos

• Published in: Mycological progress Vol. 23; no. 1; p. 63
• Main Authors: Pedersen, Ole Sparre, Læssøe, Thomas
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2024; Springer Nature B.V
• Subjects: Amanita; Biomedical and Life Sciences; China; Ecology; Fagaceae; Japan; Laos; Life Sciences; Microbiology; Original Article; Phylogeny; Pinaceae; Plant Sciences; species; taxonomic keys; Laos; China; South–East Asia; Taxonomy; 2 new taxa
• ISSN: 1617-416X; 1861-8952
• DOI: 10.1007/s11557-024-01999-5

Specimens of Amanita sect. Caesareae , collected in Xieng Khouang and Vientiane provinces in Laos from highland forests dominated by members of Fagaceae and Pinaceae , are studied based on morphological characters and analyses of ITS sequences. Two species, namely A. princepoides and A. chepangianoides , are reported as new, both found in association with Fagaceae , whereas A. pseudoprinceps and A. subhemibapha , recently described from China and A. rubromarginata from Japan, are confirmed from Laos and found in forests with Fagaceae and Pinaceae . The phylogenetic analyses to recognize the Amanita species showed that the golden-brown to greyish orange A. princepoides and the dominantly white A. chepangianoides cluster with A. aporema , A. chepangiana , A. egregia , A. princeps and A. pseudoprinceps. A dichotomous key to identified and likely occurring Amanita species in Laos within sect. Caesareae is also provided.