Abstract

Amanita macrocarpa from Guangdong Province of China is described. The new species is a large, brownish orange to light brown mushroom, characterized by numerous pyramidal warts on the pileus, yellowish lamellae, a large annulus at the middle of the stipe, and amyloid ellipsoidal basidiospores. Phylogenetic analyses of the new species and related taxa based on the large subunit of nuclear ribosomal DNA (LSU) and the internal transcribed spacer (ITS) sequences are provided. Morphological and molecular data show that A. macrocarpa is a member of Amanita, section Lepidella, and clearly different from any known taxon of the section.

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