ON THE TAXONOMY AND NOMENCLATURE OF SW ASIATIC GEOCALYCACEAE (HEPATICAE)

This study investigates the type material of some taxa of Geocalycacea e from Indonesia, Malaysia and the Philippines. Chiloscyphus argutus ( Reinw. et al.) Nees var. subtilis Nees and C. variabilis Steph. are sy nonymized with Heteroscyphus argutus (Reinw. et al.) Schiffn., Chilosc yphus balnetii Herz. with Heteroscyphus diestianus (Sande Lac.) Piippo , Chiloscyphus aequifolius Steph. with Saccogynidium muricellum (De No t.) Grolle, Chiloscyphus modigliani Steph. with Heteroscyphus splenden s (Lehm. & Lindenb.) Grolle, Chiloscyphus porrigens Schiffn. with Hete roscyphus coalitus (Hook.) Schiffn., Lophocolea crenulifolia Steph. wi th Chiloscyphus kurzii (Sande Lac.) Engel & Schust., and Lophocolea ke hdingiana Steph. with Heteroscyphus succulentus (Gott.) Schiffin. Two new combinations, Heteroscyphus merapiensis (Steph.) Piipo and H. rect angulatus (Herz.) Piippo, and three new lecto-typifications are presen ted. Chiloscyphus salacensis (Steph.) Engel & Schust., Heteroscyphus c aesius (Schiffn.) Schiffn., H. diestianus, H. fragilicilius (Schiffn.) Schiffn., H. merapiensis, and H. rectangulatus are discussed and illu strated.