Visitors Center, $50; $45 for members. Certificate in Native Plants Elective. Grasses are the most economically and ecologically important plant family but most of us know very little about them and fewer still know how to identify grasses. In this class, we will learn to recognize common grass species of the Georgia Piedmont and will dissect grass plants to learn the basic structures that are useful for identification in the field. The last two hours of the class will be spent in the field examining a variety of native and exotic grasses. Bring a hand lens. State Botanical Garden of Georgia, 2450 South Milledge Avenue, Athens, GA, 706-542-1244, www.botgarden.uga.edu.