Morphological and molecular identification of Colletotrichum siamense , a novel leaf pathogen associated with Sterculia lanceolata recorded in China

Sterculia lanceolata , an important tropical woody plant, has high ornamental and medicinal value. To our knowledge, only brown root disease in this plant has been reported. In Nanning, Guangxi, China, an outbreak of leaf blight disease was observed on S. lanceolata in June 2019, with the leaf infection rate ranging from 80% to 100%. The disease seriously affected the leaves of trees and caused economic loss. Eight isolates were recovered from...