Perhaps?

On the Fleabane plant in the previous observation. I will try to see if I can get a better pic next time I am there. But I might have to climb up and over some metal benches to get at this plant.

Referred to in the literature as "Pseudomonas syringae pv. berberidis".

The "pv." in the name means pathovar. As Wikipedia explains, a pathovar is:

"a bacterial strain or set of strains with the same or similar characteristics, that is differentiated at infrasubspecific level from other strains of the same species or subspecies on the basis of distinctive pathogenicity to one or more plant hosts.
Pathovars are named as a ternary or quaternary addition to the species binomial name"

Supposedly a cold wet spring favors this pathogen, and that was certainly what we had this year.