Two new and one new morph record of Calycina (Pezizellaceae, Helotiales) species from Southwestern China

<i>Calycina</i> (Pezizellaceae, Helotiales) is a heterogeneous group, and the taxonomic classification is frequently revised due to unclear phylogenetic relationships. To date, a total of 35 species in this genus have been documented, with six recorded in China, including four species that are endemic to the country. <i>Calycina</i> 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, <i>C. botanica</i> and <i>C. xishuangbanica</i>, and the first sexual report of <i>C. brevipes</i>, with detailed morphological descriptions and phylogenetic trees.