New record of Clathrus delicatus Berk. & Broome for Indonesia

Clathrus delicatus is a small cage fungus and it is considered as one of the advanced species in Clathrus. To date, there has been no record of C. delicatus from Indonesia. This work was aimed at clarifying the taxonomical identity of Indonesian Clathrus specimens based on morphological and molecular evidence. The fresh specimens were described based on the macro- and micromorphological characters. Molecular identification and phylogenetic tree were performed using the ITS region. Both morphological identification and phylogenetic analysis confirmed our specimen as Clathrus delicatus Berk. & Broome. Clathrus delicatus FIPIA-DEP44 is very unusual, with tiny white to cream basidiomata and having glebifers at the intersection of the arms that distinguish it from most species in Clathrus. However, C. chrysomycelinus and C. oahuensis produce similar glebifer structures. The BLAST result showed that our specimen has 96% similarity with C. delicatus. In addition, the phylogenetic tree (Maximum Likelihood) nested our sample in the C. delicatus clade (99% bootstrap value). The current study reports the first occurrence of C. delicatus in Indonesia, which can be used for the future studies on Phallales.