ABSTRACT
Sonerila is a genus of ca. 100-175 species distributed from Sri Lanka and southern India to the Indo-Pacific region. It is the only trimerous genus (except for the monotypic Stussenia C. Hansen and Lithobium Bongard) in the Melastomataceae, with the flowers having one or rarely two whorls of stamens. Sonerila nagyana, described and illustrated here, has one staminal whorl and is unusual in its rosette habit with succulent and lanceolate leaves. It was discovered in heath forest in the Upper Barito Ulu region in Central Kalimantan, Borneo.
Cellinese N. 1997 A new Sonerila (Melastomataceae) from central Kalimantan, Borneo. Novon.7. (2): 103-105: http://www.jstor.org/stable/3392180
