The perennial wildflower, Baptisia australis var. australis (L.) R. Br. is found along only four waterways in Pennsylvania, and it is because of this limited distribution and small number of extant populations, that B. australis var. australis is considered state-threatened in Pennsylvania. In addition, the riparian prairie habitat that Pennsylvania Baptisia australis var. australis is restricted to is also in decline and considered vulnerable in the state. Because of conservation concerns for Baptisia australis var. australis in Pennsylvania, gaining insights into the natural history of the taxon is useful for conservation practitioners to understand the extent of threats facing the taxon. While granivory by several insect species is noted to impact the taxon in other parts of its range, no granivory has been recorded in Pennsylvania. Field survey and examination of herbarium specimens were used to determine if granivores are present in Pennsylvania populations. Once evidence of granivory was found, field collected data and generalized linear models were used to further analyze the impact of granivores, as well as attempt to determine if there are factors that could be used to help predict granivore presence/impacts. Through partnership with various Pennsylvania conservation agencies, this research will help to inform the future conservation status of Baptisia australis var. australis in Pennsylvania, and finally provide evidence that granivores do impact Pennsylvania B. australis var. australis populations.