Goldenrod Fly Gall

Thanks for the valuable information, Dane, and Travis! I really appreciate this and your help! :-)

Gall insects are an example of commensalism called shelter symbiosis.
The insect benefits and the plant is unaffected by the relationship.

nice one ! incredible relationship between a plant and insect. i read that the downy woodpeckers and chickadees will bore into the galls and eat the larve, didn't find anything relating to wether it's detrimental to the golden-rods, and they are quite a common plant. Thanks Jakubko!

I think I found it, Travis and Dane:
http://bugguide.net/node/view/268431/bgi...
I just have one question. Is this detrimental to the plant?

That's what I was thinking Dane. Thank you very much for your help.

darn, this is driving me crazy, i called it onion grass for the longest time, IT IS a native wildflower, but cannot I.D. without the book my grandma has on wildflowers. I'll get back to this one.

i KNOW what that is, and it is a bulb of the plant. give me a second to confirm.

Thanks Travis. It was found in the early summer, and I didn't see any holes. It appeared that many other plants of the same species had this gall-like object.

This looks like an insect gall. Examine the outside for a small hole where an emerging insect would have crawled out. Otherwise, use a knife to slice down the middle and view the insect/cavity.