Govaerts (K.Krause) 2008 - Ruhsam M, Govaerts R, Davis AP (2008) Nomenclatural changes in preparation for a World Rubiaceae Checklist. Botanical Journal of the Linnean Society 157(1): 115-124. doi: 10.1111/j.1095-8339.2008.00779.x.
There is no corrections for Kohautia caespitosa subsp. amaniensis yet.