In order to develop an efficient and effective conservation strategy using complementary in situ and ex situ techniques, we must have a clear understanding of each target species geographical distribution, its habitat preferences and requirements, its genetics, reproductive biology and taxonomy. The details of the localities where past collection have been made, the so-called passport data, associated with herbarium and germplasm collections, are a key source of information to guide future conservation activities. For example, if the passport data for a particular species indicates that it...