California Polytechnic State University, Robert F. Hoover Herbarium (OBI)
Senecio triangularis Hook.
United States, Colorado, Lake, North Fork West Tennessee Creek; Tennesee Creek Basin, 8.2 mi. north of Leadville, then 2.4 mi. generally west on County Road 9 and Forest Road 131, not quite to Lily Lake, 12.5 km. north northeast of the GNIS location of Leadville.