Abstract
This study of recent collections of mosses in Vietnam and Laos yield, 10 new records for Indochina, 15 new records for Vietnam, 2 new records for Laos, and 5 other noteworthy records, including significant range extension and validation of doubtful records. Acroporium rufum is an erroneous record and should be removed from the Vietnamese flora. A new combination Distichophyllum cuspidatum var. subcuspidatum is proposed, whereas Trichosteleum montanum is considered a new synonym of Papillidiopsis ramulina. The occurrence of Thuidium pristocalyx var. orientale, a name missed out in previous moss checklist of Vietnam, is here supported with an authentic specimen. Trismegistia lancifolia and T. rigida (= T. calderensis var. convoluta), which have been recently resurrected from synonymy accepted in previous checklists, are both confirmed to occur in Vietnam from our collection.