Pondweeds, Bur-reeds and their Relatives of British Columbia by Christopher T. Brayshaw Occasional Papers of the British Columbia Provincial Museum Paperback, First Printing 1985, 170 pages Monocotyledons are a major group of flowering plants that have embryos with only one seed leaf. This group comprises four orders and 14 families of plants in freshwater and marine environments. The most populous families are pondweeds and bur-reeds, but others are water-plantains, arrow-grasses, sea-grasses, arums (including skunk cabbage), duckweeds, water-meals and cat-tails. Dr. Brayshaw’s finely detailed illustrations and diagnostic keys help identify all BC species in this book. See pictures Pickup in Langford Cross posted