This group (Pentandria digynia) corresponds almost exactly with N.O. Umbelliferae. A large and difficult order, with some 40 genera in Great Britain. Flowers usually white, arranged in umbels. The fruit often supplies the best means of identification. The parsnip and carrot should be studied as a clue to the wild plants, hemlock, earthnut, hog-weed, fennel, and others.