Explore the beauty and variety of plant forms using pencil, watercolor, and colored pencil at the Harvard Museum of Natural History, 26 Oxford Street in Cambridge. This four-week course on Saturdays from 9:30 – 11:30 on March 11, 18, 25 and April 1 will introduce botanical drawing techniques through close observation and practice with contour, gesture, foreshortening, shading, and color. All skill levels are welcome. Instructor: Erica Beade. Fees: $110 Arboretum members/$130 nonmembers. Advance registration required at www.hmnh.harvard.edu.  Image from www.science-art.com, copyright ENBeade 2000.