Abstract
Begonia chambersiae (Begoniaceae) and Kibara renneriae (Monimiaceae) are described from the southern mountains of Papua New Guinea. The first species is apparently a limestone endemic. Distributional records are also reported for Alyxia pugio (Apocynaceae), Aporosa decipiens (Phyllanthaceae), Glochidion urceolare (Phyllanthaceae), and Kibara archboldiana.