Etymology: Hyssopus: ancient name for a medicinal herb
Plants: perennial forb, aromatic; stems square
Flowers: blue to purple, 5-parted,
Fruits: 1-seeded nutlet
Conservation Status: Introduced - escaped
USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Purple Sage - Ethnobotanical Information: Detailed usage, preparation, and other helpful information Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"