Lea, glad you're here! I bought some pure white purslane one year, never to be found again. It was amazing!
It sounds like you have the wild one if there aren't any blooms.
But don't eat spurge....cough cough cough! We have spurge growing on the grass right now and it will take over. YUCK!
Want to read a short article on Purslane? It's here on All things Plants. There's a recipe using purslane there too.
http://garden.org/articles/vie...