Well friends Im back again with another new one here from New Jersey. First I thought it was a dandelion then I ventured out back and a closer view reminded me of Buttercup flowers I used to pick for my Mom years ago. If pictures are not good enough let me know and I'll try to improve. Later from an overcast NJ ed mystery flower ( photo / image / picture from Edlou8181's Garden ) ( photo / image / picture from Edlou8181's Garden ) ( photo / image / picture from Edlou8181's Garden )
I'm having fun finding the leaf amongst the blades of grass to make a positive ID. My first stab at an ID is Tribulus terrestris with a common name of puncture weed. Jerry
I have no idea, either, but it does look like it would be in the buttercup family. Do you have a picture of the foliage?