Taxonomic studies of the genus Bulbophyllum (Orchidaceae) from IndoMyanmar and Himalaya Biodiversity Hotspots: three newly recorded species in the flora of China, four new synonyms of Bulbophyllum

Based on field surveys in China conducted from 2021 to 2023, three new records ofBulbophyllum are reported: B. cornu-cervi, B. nodosum, and B. piluliferum. Descriptions and illustrations for diagnostic characters are provided for those species, along with information on their types. In addition, four names, e.g., B. sinhoense, B. contortum, B. huangshanense and B. tengchongense, are reduced to the synonymy based on critical examinations of literature surveys, living plants in the field, and herbarium specimens.