Chinese Cork Tree
Phellodendron chinense
var.
glabriusculum
Citrus Family: Rutaceae
Commonly known as chuan huang bo, this tree's bark is used in various herbal remedies.
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Chinese Cork Tree
This Morton Arboretum Chinese Cork specimen is 51 years old, grown from a graft.
Phellodendron chinense C. K. Schneider, Ill. Handb. Laubholzk. 2: 126. 1907.

Trees to 15 m tall. Leaves 7-15-foliolate; rachis glabrous, thinly pubescent, or rust-colored tomentose; leaflet blades ovate-elliptic to oblong-lanceolate, 8-15 × 3.5-6 cm, papery, base cuneate to attenuate and oblique, apex mucronate to acuminate. Inflorescences and infructescence ± compact, rachis, branches, and pedicels robust. Fruit subglobose to ellipsoid, 1-1.5 cm in diam. Seeds 6-7 × 3-5 mm. Fl. May-Jun, fr. Sep-Nov.
Chinese Cork Bark and Foliage

Found in mixed broad-leaved, open to dense forests; 800-1500(-3000) m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Shaanxi, Sichuan, Yunnan, Zhejiang. [1]

 Chinese Cork Tree fruit
References
  1. Flora of China, Phellodendron chinense
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Family Rutaceae - Cork & Citrus
Plants in this family are herbs, shrubs, and trees with commonly odoriferous herbage comprising about 150 genera and 1,500 species; further characterized by the common occurrence of spines and winged petioles. The Citrus genus includes the agriculturally important fruit trees: orange, lime, grapefruit, kumquat, and mandarine
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