The evolutionary significance of hybridization in Eucalyptus

New estimates of dispersal and levels of hybridization were obtained from open-pollinated progenies from extra sites and from post-dispersal, pre-selection seed samples collected from ants' nests and soil from the forest floor immediately after fire to support the authors' earlier conclusions that for E. risdonii pollen-mediated dispersal into the range of E. amygdalina occurs over a greater distance than seed-mediated dispersal. Recent criticisms of the subject [Schemske, D.W.; Morgan, M.T. (1990) Evolution 44, 2150-2151] are answered.