, intracontinental disjunction in Nolana
in the Atacama and Peruvian deserts (Dillon et al., this issue); upper right
, hypothesized intercontinental and intracontinental dispersal routes in Ephedra
(Ickert-Bond et al., this issue); lower middle
, leaf fossil of Aesculus hickeyi
S. R. Manchester with five leaflets from the Paleocene of North Dakota, courtesy of Steven R. Manchester; lower right
, probabilities of ancestral ranges inferred for sect. Aesculus
using the revised Bayes-DIVA method (Harris & Xiang, this issue).