What happens when different species hybridize?

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Together, the common (Asclepias syriaca) and showy (Asclepias speciosa) milkweeds span most of the continental United States. These species come together and form hybrids in the central US. 

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We are interested in understanding the genomic and metabolic consequences of hybridization between the common and showy milkweed. We are studying the species differences through common gardens, greenhouse, and lab experiments.