Infrageneric systematics of Tagetes
Recent revision of Senecioneae and Calenduleae systematics
"Inuleae" - a paraphyletic assemblage
Taxonomy and evolution of Baccharidinae (Compositae)
Sesquiterpene lactones of the Cardueae, subtribe Centaureinae
The status of generic and subtribal revisions in the Vernonieae
The evolution of Carlina - A hypothesis based on ecogeography
Phytogenetic hypotheses for Asteraceae relationships
A proposed sectional classification for Mikania (Eupatorieae)
Chemotaxonomy of anthocyanins and phytoalexins in the Compositae