Goat's beard, Aruncus dioicus, is an attractive perennial native to Asia, Europe, Canada, and the United States. As is to be expected of a plant with so wide a range, it is variable depending on the growing conditions and geographic origin. Compare, for example, the image above of a cultivated specimen plant in Ireland with a plant growing wild in the Hengduan Mountains of China.
Image taken by Gary Goforth while vacationing in Ireland. The plant with tiny greenish flowers growing in front of the goat's beard is a lady's mantle (Alchemilla species).
Image © 2009 Gary Goforth. All rights reserved.