A revision of Alpinia sect. Myriocrater (Zingiberaceae) of the Philippines with a description of a new species

Summary Alpinia sect. Myriocrater of the Philippines is revised here. Alpinia musifolia and A. vulcanica are redescribed using recently collected material from their respective type localities as well as material collected elsewhere in the Philippines. Examination of collections with similar morphology to A. musifolia distributed in the eastern Philippines reveals that the collections represent a new species named here as Alpinia orientalis. Information on their distribution, habitat, and the conservation status of all Philippine Alpinia sect. Myriocrater species are included and a lectotype designated. A key to the Philippine species of Alpinia sect. Myriocrater is provided.