Holzapfel, S., Faville, M. & Gemmill, C.E.C. 2002. Genetic variation of the endangered holoparasite Dactylanthus taylorii (Balanophoraceae) in New Zealand. Journal of Biogeography 29: 663–676.
Genetic variation among seventeen populations from the entire known range of the endemic root parasite Dactylanthus taylorii is studied using RAPDs. Markers show that all sampled populations are unique and can be grouped into two main clusters, corresponding to an eastern and western distribution separated by the Taupo Volcanic Zone. Observed genetic variation is predomi-nantly among as opposed to within populations and is not correlated with geographical distance below the regional scale. Results indicate long isolation and restricted gene flow among populations and are interpreted mainly as characteristics of the species. The role of vegetation disturbance through volcanism is discussed.
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