These herbaceous perennials are natives of Europe, Asia and Africa and belong to the Daisy family, Compositae. The height of the different types varies considerably from 1 to 6 feet. I. magnifica grows up to 6 feet and has dark green, lance shaped leaves, which are smooth above and hairy beneath with serrated edges. Its large, rich yellow flowers h... Found on http://www.encyclo.co.uk/local/10004