In California, many plant species are facing impacts due to human activities, including habitat conversion, introduction of non-native species, fire suppression, and the effects of climate change. These ongoing changes highlight the urgent need for comprehensive floristic research. This study will document the flora of The Piute Mountain Range, located at the southern terminus of the Sierra Nevada. This location is near the juncture of four ecoregions including the Mojave Desert, Great Basin Desert, Central Valley, and southern California mountains, resulting in elements of vegetation from all of these biotic provinces. The study site is approximately 200 sq. mi. with a diverse topography and elevational ranges from 2,450 to 8,440 ft. There are large spatial and temporal gaps in the collection history of the Piute Mountains, and many species collected in the past have not been recently documented. There is still very high potential to find unrecorded rare plants, range extensions, or even undescribed taxa. This project will result in voucher specimens and associated data, iNaturalist observations, a complete checklist, and updated statues of rare plants within the study site. High-quality voucher specimens allow for extended future research in phenology, range expansion and contraction, effects of climate change as well as provide a source for molecular and isotope data. Throughout this project I am simultaneously compiling a conservation plan for Eriogonum breedlovei var. breedlovei (Piute buckwheat), which is endemic to the range. The goal of the conservation plan is to provide a comprehensive overview of the most up to date scientific information on E. breedlovei var. breedlovei to inform stakeholders with recommendations for conservation of this taxon. This floristic study will span two years with the expected completion of the second field season in September of 2023. To date, I have collected 986 vouchers, with 842 corresponding iNaturalist observations, resulting in the determination of 495 minimum rank taxa.