Martha G. Kemp is a botanical artist specializing in graphite pencil drawings. She has exhibited widely in the United States and has received numerous awards, including the 1999 annual Award for Excellence in Botanical Art from the American Society of Botanical Artists; Best Drawing in Show at the 2003 New York Horticultural Society's Sixth Annual Exhibition; and five medals, one silver-gilt and four gold, from the Royal Horticultural Society, most recently in 2005. She illustrated Wildflower Walks and Roads of the Sierra Gold Country and contributed drawings to The Trees of Golden Gate Park and San Francisco.
Her work is in the permanent collection of the Hunt Institute for Botanical Documentation, in Pittsburgh; the Brooklyn Botanic Garden Florilegium Society; and the Shirley Sherwood Collection, in London. She is a fellow of the Brooklyn Botanic Garden Florilegium Society; a member of the Guild of Natural Science Illustrators; a former member of the board of directors of the American Society of Botanical Artists; and she is represented by Susan Frei Nathan Fine Works on Paper, in Millburn, New Jersey.