Acosta diffusa (Diffuse Knapweed)

This aggressive plant has a large population on 68J, and a few smaller ones that have been managed by PUMA members for about nine or ten years. We have to outwait their seedbank, which may outlive us all.

 

 

 

Note the comb-like fringes on the bracts, which are one of the main identifying characteristics of this plant.