Amur corktree Rutaceae Phellodendron amurense Rupr. symbol: PHAM2 Leaf: Opposite, pinnately compound, 7 to 11 ovate to elliptical leaflets, entire leaf 11 to 14 inches, shiny dark green above, much paler below. Flower: Upright 2 to 3 inch long clusters of small maroon to yellow-green flowers, appearing in late spring to early summer. Fruit: Black 3/8 inch diameter drupe in clusters, ripen in early fall and persist through the winter. Twig: Stout, lustrous brown, numerous lighter lenticels; large raised U-shaped leaf scars encircles a fuzzy brown broadly conical bud; inner bark of twigs bright yellow. Bark: Dark gray, ridged and furrowed, becomes quite thick with corky ridges. Form: A medium sized tree (50 feet), with a spreading often flat-topped crown. Looks like: Korean evodia - green ash - yellowwood Additional Range Information: Phellodendron amurense is planted in the USDA hardiness zones shown above and is not known to widely escape cultivaton. More: Fall Color External Links: USDA Plants Database Horticulture © Copyright 2016, Virginia Tech Dept. of Forest Resources and Environmental Conservation, all rights reserved. Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson