Puccinia chondrillina

Groves, R.H., Williams, J.D. Growth of skeleton weed (Chondrilla juncea L.) as affected by growth of subterranean clover (Trifolium subterraneum L.) and infection by Puccinia chondrillina Bubak and Syd. Aust J Agri Res 1975 36 975-983. 

Puccinia chondrillina Foliar pustules, reduced plant... 

Puccinia chondrillina Bubak. Syd., a rust fungus from Europe, determined to be a virulent, host-specific, and safe biocontrol agent, was introduced into Australia in 1971 to control Chondrilla iuncea L., rush skeletonweed (27. 28). In 1976 it was introduced into California and later into other western states in the U.S. (29-31). The biology of this pathogen, weed control success, and assessment of the economic impact of controlling rush skeletonweed in Australia have been reviewed (23, 27-31). In summary, the... 

In 1985 in the Pacific Northwest, atten ts have also been made to integrate Puccinia chondrillina, the classical biological control agent for skeletonweed, with chemical herbicides (32). 

---