Wildflowers: what is this interesting shrub?

I saw this along the treeline at a meadow's edge and the curious coloration and the seed clusters amongst all of the other plain green shrubs definitely grabbed my attention. Any ideas what it is?

 

Looks like whatever the plant is has a bad case of powdery mildew.

 

Looks like a Ptelea.

 

...and it looks like a hop tree (wafer ash) to me also.

 

Thanks. It does look like a hop tree from the pictures I've found, except for the coloring of course. Perhaps it does have something but I don't think it's mildew.

 

Maybe a virus disease? Agree it doesn't look like mildew.

 

Could be bugs such as leafhoppers or mites. Look on the leaf undersides.

 

A bug can make the leaves lose some of their green in such a splotchy fashion? Well, this photo is from a month ago or so and when I returned a few days ago the shrub (and others not adjacent but in the vicinity) were still oddly colored (though some of the shrubs less so than others), but I didn't observe any pests, though perhaps the damage was done earlier in the summer and the now there is nothing to see but the results.

 

Wondering if the spotty discolorization could be the result of contact with some sort of chemical spray. Cherish says that the plant is at a meadow's edge: could be that it received an inadvertent dose of insecticide, fertilizer, or the like...Maybe a substance that caused a light sensitivity or chlorosis.

 

Yes, it can, when there is an infestation of numerous small sap-sucking insects.

 

Well, it'll be interesting to see how it looks next spring.