I need to identify this plant. It appeared in my garden in Milwaukee County, Wisconsin. It's leaves are furry, green like a Kelly green; the stem has small thorns that are a bit soft. The leaf is elongated with five wider bulges looking a bit like the Clubs in a deck of cards but with five bulges. The flowers are yellow, blooming in mid July. The seed pods have formed already shortly after the plant appeared. The seed pods are a thorny ball clustered below blooming flowers.
What plant is this?
what plant is this? - a set on Flickr

Hi! SocratesChild, and welcome to AMHD :)

Pretty sure this is it, and if it is you'll want to get rid of it!

Solanum rostratum page

Couldn't help notice the other pix on fish, You into Aquaculture?

K

Thanks, you nailed it all right.
Best
Bill