I am quite interested in methods to measure plant collection diversity. Is your score a simple sum? Are all genera considered equally diverse? How do you know what everyone else has? Tim > Diversity was measured by the #families, #genera, #species in the > collection. The UC Garden tops all other N. American gardens in the > families and genera and has the 3rd largest number of species. However, > it appears our collection is unequaled based on the number of > acquisitions with provenance (of wild origin)k. In fact, we would easily > have greater diversity if we didn't adhere to our policy of wild > collected material with provenance. In thinking of this, it is a way > that PBS may help us build the collection. We could discuss this issue.