Habit, inflorescence and floral morphology in early-branching lineages of Dianthus and Petrorhagia. The Dianthus tunicoides clade is represented by D. pachygonus (= Petrorhagia cretica), which has solitary flowers (A, B) in diffusely branched inflorescences (C). The Dianthus armeria clade is represented by D. armeria (D), which has condensed terminal inflorescences and flowers supported by reflexed, bract-like leaves, and D. deltoides, which has lax inflorescences with solitary flowers each supported by two opposite bracts (E). The core clade of Petrorhagia is represented by P. prolifera, which has highly condensed terminal inflorescences with broadly ovate and thinly scarious bracts enclosing the flowers (F with opened inflorescence to the right). Photos: A. Nersesyan (A-D), T. Borsch (E, F).