"Purslane is one of the richest vegetable sources of omega-3 fatty acids.To answer the question: Yes, it tastes fine. Like many salad ingredients, to my mind, it doesn't have a strong taste. Being really into healthy eating, I think I'll collect it when I can. Who knew that it's such a good source of omega 3s?
A big part of the reason that the meat from pasture-raised cattle (and wild game) is higher in omega-3 fats is because grazing animals favor these succulent wild greens and will eat them preferentially over other grasses. It makes good grazing for people, too. According to research published in the Journal of the American College of Nutrition, 100 grams of purslane contains 300-400 mg of omega-3 fats (alpha-linolenic acid), along with over half a day's supply of vitamin E, a third of the day's vitamin C, and a quarter of the day's vitamin A. But does it taste good?"
I'm kind of sorry I ate the purslane before taking a picture of it, and believe it or not, I can't find any more of it at the moment, but there are pictures and more info at wikipedia.org.
There are some purslane recipes at the Prairieland Community Supported Agriculture site.