I bought flounder filet from PE&DD, young shallots and garlic from Lani, cheese from Consider Bardwell, and yogurt from Hammond Dairy (who has started to bring in drinkable yogurt as well). Race is here with many flowering and other plants as well as honey and baked goods. Madura has many vegetables, mushrooms, and flowering plants. Lani has edible flowers, greens, scapes, cut herbs, and salad greens, along with various kinds of onion family items. Hudson Valley Duck Farm has smoked duck breast this week along with ducks and other duck products.
Check this URL for these and other stands who've braved the rain to get to Union Square Greenmarket: Greenmarket Monday, 4/23/12