André AptrootBooksDe Nederlandse levermossen & hauwmossenImages of the lichen genus CaloplacaKorstmossenLichens of St HelenaMycosphaerella and its anamorphsA monograph of DidymosphaeriaAnnotated checklist of Hongkong lichensFruticose RoccellaceaePyrenocarpous lichens with bitunicate asciAuthor data: Open Library