Taking your inspiration from the historical tradition of botanical illustration, learn to draw botanical specimens in a wide range of drawing media, including graphite, pen and ink, colored pencil, and watercolor pencil. In this 10 week, Cambridge Center for Adult Education class, you will look at the work of great botanical illustrators. You will explore composition and personal style as you execute carefully observed perceptual drawings. The instructor, Sean Dunstan-Halliday, will supply some plants, but you also will be asked to bring in specimens. The class includes excursions to the Harvard Museum of Natural History. The first class will take place Tuesday, April 1 at 42 Brattle Street in Cambridge. The tuition is $249, and you may sign up at www.ccae.org. Thank you Meg Muckenhoupt for the tip.