Unveiling the Diversity: Two new and one new morph record of Calycina species from Southwestern China

Calycina (Pezizellaceae, Helotiales) is a heterogeneous group and its taxonomic classification has undergone numerous changes. To date, a total of 35 species in this genus have been documented, six of which have been recorded in China, including the four that are found exclusivelyin the country. Calycina species are reported in their sexual and asexual morphs and the phylogenetic placements of several species remain unresolved due to the lack of molecular data. During a study on the fungal diversity of southwestern China, six specimens were collected and analyzed using both morphological characterizations and multi-gene phylogenetic analyses (LSU and ITS). The results revealed two new species, C. botanica and C. xishuangbanica, and the first sexual report of C. brevipes, with detailed morphological descriptions and phylogenetic trees.