摘要：Capnodiaceae is believed to be the largest family containing sooty mould species, the taxa of which can cause chlorosis, plant stunting disease, and marketability problems, due to black mycelium coating the surface of host. Presently, little molecular data are available for species of Capnodiaceae in GenBank, thus more collections and sequence data are needed to improve the understanding of genera and species boundaries in this family. “Sooty mould”-like taxa, appearing as black colonies on the surface of leaves, were collected in Chiang Rai Province, Thailand. Taxa were studied based on morphological characters and molecular analyses. A phylogenetic tree using combined LSU and ITS sequence data generated by Maximum likelihood analyses (LSU and ITS) indicated that the new species, Capnodium coffeicola and Conidiocarpus plumeriae , belong in Capnodiaceae . We introduce the two new species base on morphological characterization and phylogenetic analyses
