Rapini.
A member of the cabbage family, Rapini, or broccoli rabe, is a vegetable that is gaining broader popularity. Now widely cultivated in california, it's commonly available in supermarket year round. Locally grown varieties are available for most of the summer and fall. Rapini tastes slightly bitter, is very tender and cooks quickly. A familiar ingredient in Italian cooking, it's common in soups, pasta and tarts, and as a side dish served hot or cold.
Swiss chard.
A member of the beet family, Swiss chard has broad, green, somewhat glossy leaves. Its wide stems are usually white or red but are sometimes yellow, pink and multicolour. The leaves and stems are often prepared separated. The leaves can be cooked just like spinach and have a similar but somewhat more earthly flavour. Good in egg and cheese dishes, the stems have a slightly stronger flavour and must be cooked longer.
Collard and Kale
Member of the cabbage family, collard and kale are virtually interchangeable in cooking. Kale books in about half the time, however, and consequently requires a little less water in the pot. Collard has and earthy flavour, while kale has a sharper, more pronounced cabbage taste. Collard is a wide, heavy, long stemmed, flat leafted brassica.
Image from: http://www.ahomesteader.com/
