RANDLE, CHRISTOPHER PATRICK. Department of Evolution, Ecology and Organismal Biology, Ohio State University, Columbus, OH 43202. - Biosystematics of Harveya Hook.(Orobanchaceae): preliminary studies.
Harveya is a genus of root holoparasites in Orobanchaceae,
distributed throughout southern Africa. Preliminary studies of
herbarium material indicate that 19-25 species of Harveya
inhabit South Africa, the center of diversity for this genus.
Morphometric analysis of herbarium material was performed to establish
species boundaries and morphological characters have been used to
generate a preliminary phylogeny of this genus. Future work will
involve inclusion of molecular data into phylogenetic analysis, a
monograph based on natural groupings, and investigation of the
evolution of photosynthetic loci in this holoparasite.
Key words: Harveya, holoparasite, Orobanchaceae, parasite, phylogeny