I think it's now called Chamaesyce. One species used to be called Euphorbia maculata. Here is a link that might be useful:

Thanks texasflip. That gives me a starting point to search from.

i used to have a golden ... he ended up in about 60% of my pix.. apparently anything that was interesting enough for me to stand in front of.. had to be checked out by him ... or he was just ahead of the curve in selfies .... nice to see us all goofing around a bit ... refreshing ... ken

in flower.. a huge tree can reek of the magnificent aroma of wet ugly dirty gym socks.. lol ... btw.. a vast majority of galls are cosmetic in nature ... and in no way harm the tree long term .. i mean really .. their life span is limited to when the leaves fall off .. the cherry themselves are maybe a quarter inch.. and are 95% pit ... and i am pretty sure the birds use them a laxative ... usually using gutters and fence.. etc.. as places to deposit prefertilized seed ... ken