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Abstract
Hoary tansyaster is a short-lived perennial forb with pale to dark purple flowers. Plants are 6 to 30 inches tall with diffuse branching. Leaves are about 2 inches long and oblong or lance shaped with entire to sharply toothed margin. The flower heads have many subtending bracts that reflex away from the flower at the tip. These bracts are white and membranous at the bottom and green at the tip. Leaves and flower heads are very sticky and heavily scented. The pappus of the achene is dirty white and hair-like. There are approximately 1.3 million seeds/lb based on seed counts conducted by Aberdeen Plant Materials Center.
Citation
Tilley, Derek. 2014. Release brochure for Amethyst Germplasm Hoary Tansyaster (Machaeranthera canescens). Aberdeen, ID: U. S. Department of Agriculture, Natural Resources Conservation Service, Aberdeen Plant Materials Center. 2 p.
