Dear All, Information from the Rowden Gardens website, Iris Specialists in the UK. Iris 'Holden Clough' with a few I.. pseudacorus cvs. listings http://rowdengardens.com/new_website/… 'Holden Clough' image at - http://rowdengardens.com/new_website/images/… According to John and Galen Carter, who have grown this plant for an eternity, quote ''The parentage of this magnificent iris is the stuff of argument! Found in the well known Nursery whose name it carries. Pale chrome falls are very heavily veined plum brown. Orange signal also veined. Standards as falls, styles yellow. Here it appears to grow better in damp soil rather than actually in the water. 3 ft.''. John is of the opinion it is a chrysographes cross, which of course would give it its dark coloration. I not sure that the Foley's who now own the Holden Clough nursery, and who I also know well, would know any better. Best Wishes, Dave David Fenwick St. Austell, Cornwall.