Info: Bract / Two galls or one Solidago altissima (tall goldenrod) with ball gall caused by the goldenrod gall fly (Eurosta solidaginis) and bunch gall caused by the goldenrod bunch gall midge (Rhopalomyia solidaginis) / License: Creative Commons (cc-by-sa-nc-3.0) (Attribution, ShareAlike, NonCommercial)
