Artemisia ludoviciana, also known as White Sage, Western Sage, or Prairie Mugwort. Drought tolerant, rhizomatous spreading plant with aromatic foliage used in cooking and brewing.
Sold as 8 to 12 inch root pieces.
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons