A moon penny is a type of daisy. This rhyme is a Yorkshire saying...

Moon Penny - English Children's Songs - England - Mama Lisa's World: Children's Songs and Rhymes from Around the World  - Intro Image



Thanks and Acknowledgements

The image comes from "The Illustrated Dictionary of Gardening" by George Nicholson, John Garrett, James William Helenus Trail (1901) - it was heavily graphically edited by Mama Lisa.