Fig. 4From: The phylogenetic significance of leaf anatomical traits of southern African Oxalis A phylogenetic tree with discrete-data and illustrations of 6 leaflet anatomical traits observed in Oxalis. a A single ITS phylogenetic tree from the BEAST posterior distribution for southern African Oxalis taxa. Posterior probability values for relevant clades are indicated above nodes. b The discrete data of six leaflet anatomical traits. c Illustrations representing the typical leaflet morphological and anatomical types of each of the numbered Oxalis clades. Leaflets orientated as in the outgroup example. AD – adaxial, AB – abaxialBack to article page