The systematic anatomy of Grevilleeae and Persooniinae (proteaceae)

Abstract

The anatomy of leaves was described for 91 species In the Grevilleeae and 15 species in the Persooniinae. The anatomy of the stem-node-leaf continuum was described for 57 species in the Grevilleeae and 6 species in the Persooniinae. Anatomical features were discussed in the context of taxonomic relationships in genera and, briefly, at higher levels. In Hakea, anatomical data supported the groupings proposed by taxonomists. In Grevillea, recognised natural groups were supported and anatomical features were useful in demonstrating homologies in the leaves of some Groups. In Persoonia anatomy supported some proposed groupings but, in others, anatomical characteristics showed considerable diversity. The variability of character states, homologies and homoplasies and the suitability of anatomical data for cladistic analyses was considered. A preliminary cladistic analysis was made and discussed.