The Winteraceae of the Old World. VII. Zygogynum in the Solomon Islands (incl. Bougainville)

A review of the character distribution in the Zygogynum representatives from the Solomon Islands (and Bougainville) shows a rather wide variability in ranges of numbers and sizes, often with distinct differences between islands or altitudinal ranges. However, the morphology is rather uniform. The four species recognised by A.C. Smith had to be synonymised, but a new taxon deserved recognition. The name Bubbia is explained.