Luc, do those papers give any thoughts about the origin of Iris susiana? I’ve read that it has never been found truly wild; and I think the cultivated material is evidently clonal (with at least two clones). Jim McKenney jimmckenney@jimmckenney.com Montgomery County, Maryland, USA, 39.03871º North, 77.09829º West, USDA zone 7, where if the sun comes out Iris hoogiana should open. My Virtual Maryland Garden http://www.jimmckenney.com/ BLOG! http://mcwort.blogspot.com/ Webmaster Potomac Valley Chapter, NARGS Editor PVC Bulletin http://www.pvcnargs.org/ Webmaster Potomac Lily Society http://www.potomaclilysociety.org/