The Nahanni Aster (formerly Aster nahanniensis) is a rare endemic found nowhere else in the world other than in the Nahanni National Park Reserve in the Northwest Territories (4 sites). It has been ranked as G1 (Critically Imperiled) by NatureServe, and May be at Risk by the NWT General Status Ranks process. COSEWIC assessed this species as Special Concern in 2014.
NWT List of Species at Risk:
NWT SARC Assessment:
Federal Species at Risk Act list:
NWT General Status Rank: