Tilapho, T.; Kaewsriprakai, S.; Poengsungnoen, V.; Buaruang, K.; Polyiam, W.; Chansriniyom, C.; Khanboon, A.; Chaotham, C.; Phongsopitanun, W.; Weeraphan, T. Characterization and antimicrobial activity of usnic acid from tropical lichens collected from Doi Suthep Pui, Thailand. Agr. Nat. Resour. 2025, 59.