Timonius in Borneo. 2023. illus. (col.). X, 424 p. gr8vo. Hardcover.

This monograph details what is known about Timonius in Borneo, a group in the extremely hypderdiverse coffee family Rubiaceae, that no one has studied since some scattered initial documentation in the past few centuries.

This account documents 94 species of Timonius, a genus of mostly treelets to small trees still poorly understood throughout Southeast Asia, of which 68
species are newly recognised. Some 96% of the genus is endemic to Borneo, not known beyond this large, physiographically and geologically diverse tropical island, a centrepiece in the biogeography of a vast,
biologically diverse region of our globe. The book includes discussions on the morphology, biology and reproductive ecology of Timonius and related plants, and is illustrated by 294 figures and 58 botanical linedrawings.