No abstract

Specimens of Clavulinopsis (Clavariaceae, Agaricales) collected in China were studied using morphological and molecular methods. Six species—C. aspersa, C. bicolor, C. bispora, C. erubescens, C. incarnata, and C. tropicalis—are described as new to science, and C. trigonospora is a newly recorded species in China. Phylogenetic analysis was conducted based on a combined dataset of internal transcribed spacer and nuclear ribosomal RNA large subunit sequences. The phylogenetic reconstruction revealed that the six new species each formed an independent lineage, and the samples of C. trigonospora from China were nested with accessions of C. trigonospora collected from Italy. The morphology of the seven Chinese species is described in detail, and is illustrated with line drawings and photographs. A key to the known Clavulinopsis species in China is provided.

Species of Clavaria (Clavariaceae, Agaricales) collected from China were studied using morphological and molecular methods. Two species, C. aspersa and C. hupingshanensis, are here described as new to science; the former possesses simple, scattered to gregarious or with pairs slightly fascicled, white basidiomata, whereas the latter has simple, gregarious to caespitose clusters, rose-white to seashell-pink basidiomata. In addition, C. amoenoides is described as a newly recorded species for China; this species is characterized by simple, very pale orange-yellow to picric-yellow basidiomata. A phylogenetic analysis was conducted based on a combined dataset of internal transcribed spacer, nuclear ribosomal RNA large subunit and the RNA polymerase Ⅱ second largest subunit sequences. The phylogenetic reconstruction resolved accessions of the three species into three independent lineages within the Clavaria. The morphology of the three species is described in detail and is illustrated with line drawings and photographs. Holotypes of the new species are deposited in the Mycological Herbarium of Hunan Normal University. The sequences newly generated in this study have been deposited in GenBank. An updated key to the known Clavaria species in China is provided.

Species of Clavaria (Clavariaceae, Agaricales) collected from China were studied using morphological and molecular methods. Two species, C. aspersa and C. hupingshanensis, are here described as new to science; the former possesses simple, scattered to gregarious or with pairs slightly fascicled, white basidiomata, whereas the latter has simple, gregarious to caespitose clusters, rose-white to seashell-pink basidiomata. In addition, C. amoenoides is described as a newly recorded species for China; this species is characterized by simple, very pale orange-yellow to picric-yellow basidiomata. A phylogenetic analysis was conducted based on a combined dataset of internal transcribed spacer, nuclear ribosomal RNA large subunit and the RNA polymerase second largest subunit sequences. The phylogenetic reconstruction resolved accessions of the three species into three independent lineages within the Clavaria. The morphology of the three species is described in detail and is illustrated with line drawings and photographs. Holotypes of the new species are deposited in the Mycological Herbarium of Hunan Normal University. The sequences newly generated in this study have been deposited in GenBank. An updated key to the known Clavaria species in China is provided.

Two new species of Amanita sect. Roanokenses (Amanitaceae, Agaricales, Basidiomycota), Amanita alboradicata and A. fulvopyramis are proposed here on morphological and molecular evidence. The described and illustrated are based on morphological studies of collections from Jilin, Zhejiang and Hunan provinces in China. Nuclear ribosomal large subunit (nrLSU), RNA polymerase II second largest subunit (rpb2) and translation elongation factor 1-α (tef1-α) sequences analyses supported establishment of these two new species and revealed their phylogenetic positions. Both new species possess long radicating basal bulbs. Amanita alboradicata is characterized by a white or dirty white pileus covered with angular warts. Amanita fulvopyramis is characterized by the brown orange to light brown, pyramidal to verrucose volval remnants on the pileus, and light brown to brown lamellae. Holotypes are deposited in the Mycological Herbarium of Hunan Normal University.