Revisiting Phyllactinia species on Broussonetia spp. in China

Abstract Broussonetia comprises four species in China, of which three species are known to be infected by Phyllactinia spp. Between 2018 and 2021, five new Phyllactinia samples on B . papyrifera were collected, and two already existing specimens on B. kaempferi and B. kazinoki were re‐examined. Morphological characteristics and phylogenetic analyses showed that two species, Ph. broussonetiae‐kaempferi and Ph. broussonetiae‐papyriferae , are involved on Broussonetia spp. in China. The asexual stage of Ph. broussonetiae ‐ kaempferi and the sexual stage of Ph. broussonetiae‐papyriferae have been found on B . papyrifera . They are described in detail and illustrated. As far as we are aware, this is the first description of the characteristics of the sexual morph (chasmothecia) of Ph. broussonetiae‐papyriferae .