TL;DR: The tropical American Cinchoneae and Isertieae constitute the first diverging lineage within the subfamily Cinchonoideae, followed by the predominantly paleotropical Naucleeae and Hymenodictyeae, and the remaining two lineages primarily include neotropical taxa.
TL;DR: The new genus Wandersong D.W. Taylor honors two Andersons, Dr. Gregory J. Anderson and Dr. William R. Anderson, for their outstanding and influential achievements in the field of botany.
Abstract: A revision of Chione DC. (Rubiaceae) has excluded two species, C. exserta (DC.) Urb. and C. seminervis Urb. & Ekman, from the genus on the basis of morphology. The designation Colleteria D.W. Taylor was proposed to house these species, but it was invalidly published. The new genus Wandersong D.W. Taylor is here erected to accommodate these two species. The new combinations Wandersong exserta (DC.) D.W. Taylor and Wandersong seminervis (Urb. & Ekman) D.W. Taylor are here effected under this new generic name. The new genus name Wandersong D.W. Taylor honors two Andersons, Dr. Gregory J. Anderson and Dr. William R. Anderson, for their outstanding and influential achievements in the field of botany. The name Wandersong is constructed with the surname Anderson shared between the first initials of these two botanists.