(syn. Juglans sieboldiana) Juglandaceae
Japanese Walnut JU-glanz a-lan-ti-FO-lee-a
- Deciduous tree, to 40-65 ft (15-20 m) tall, broad, round crown. Leaves alternate, pinnately compound, 60 cm long, odd number of leaflets, 11 to 17, each leaflet ovate-oblong to oblong, 7-18 cm long, serrate, upper surface bright green, pubescent at first but then glabrous or nearly, pubescent below, and densely granular and pubescent on the midrib and leaf stalk (rachis). Male catkins 15-30 cm long; female catkins with 12-20 flowers. Fruit globose to ovoid, sticky, rugose, thick shelled, 2.5-3.5 cm long.
- Hardy to USDA Zone 5 Native to Japan; introduced in 1860.
- ailantifolia: ailanti, from Ailanthus, the Tree of Heaven, and frolia, leaf.