Common name: Butternut, white walnut, oilnut, noyer cendré
Scientific name: Juglans cinerea
Chinese name: 灰核桃、白核桃
Introduction：
Juglans cinerea is a deciduous tree native to the Northeastern United States and more valued for its nuts than for lumber. It is easily grown but must be transplanted early because of the quickly developing root system.
J. cinerea trees can grow to 20(-30) m high. It features odd-pinnate compound leaves, each with (7-)11-17 oblong to lanceolate leaflets, margins serrate, apex acuminate; surfaces abaxially with abundant 4-8-rayed fasciculate hairs, scales, and sometimes capitate-glandular hairs. Fruits were covered with dense capitate-glandular hairs; nuts ellipsoid to subcylindric or ovoid, 3-6 cm, surface with ca. 8 high, narrow, longitudinal main ridges, with narrow, interrupted, longitudinal ridges or lamellae between main ridges.
