GesneriaceaeHabitat: Monophyllaea is a genus of the limestone except M. merriliana which was recorded in Bukit Tibang in Sarawak. All species grow on damp, cool and shady areas.
Distribution: Locally abundant in limestone hills at Bau, Padawan, Tebakang and Mulu National Park.
Note: Monophyllaea species are vulnerable as they are very habitat specific.