These scans are Copyright Jan De Langhe and Arboretum Wespelaar, and appear with permission. They have been reduced from the originals for easier on-screen viewing. For the full resolution scans, as well as identifying photographs of many other genera, please see the Arboretum Wespelaar.
Special thanks to Koen Camelbeke of Wespelaar and Jan De Langhe, University of Ghent, for their generous cooperation.
Names in parentheses that are not hybrids match the Accepted Names. The photograph names are unchanged from how they appeared as of this date. These images were synchronized with those at Wespelaar in July 2021.