Exciting advances in our understanding of plantreproductive biology are being spurred both bynew research on established model systems andby the emergence of new models. Moreover, com-parative analyses are placing knowledge derivedfrom each of these systems into an evolution-ary framework and thus providing insights intothe processes responsible for the diversity offorms we see today. The number of species withlarge EST sets for floral transcriptomes is grow-ing rapidly (Figure 1;