The US Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS), Aberdeen Plant Materials Center, Aberdeen, Idaho, announces the release of Amethyst Germplasm hoary tansyaster (Machaeronthero canescens (Pursh) A. Gray [Asteraceae]}, a selected class natural track germplasm identified by NRCS accession number 9076670 for conservation plantings in the Intermountain US. Amethyst Germplasm hoary tansyaster is a native forb collected near St Anthony Sand Dunes in Fremont County, Idaho. This forb flowers and produces seed during the first growing season and provides late summer and early fall blossoms for native pollinators. It is recommended for pollinator plantings, wildlife areas, and rangeland rehabilitation seedings in arid to semiarid plant communities where native forb diversity is desirable.