Figure 4. Phylogenetic chronogram of the Cistus-Halimium complex based on the Bayesian consensus tree.
Fossil calibration points are indicated on the tree. Shaded
area delineates the establishment of the Mediterranean
climate 2.8 million years ago [50]. Geological timescales are
shown both at the top and the bottom. Photographs
illustrate diversity in leaf morphology of the
white-flowered Cistus species (only
subsp. ladanifer of C.
ladanifer, subsp. clusii of
C. clusii and subsp.
populifolius of C.
populifolius are illustrated). Species
insolation conditions [77] are plotted on the right
side of the tree (
, helioxerophyllous and subhelioxerophyllous;
, subsciophyllous and
submesophyllous).