Corktree refers to Phellodendron amurense Rupr.(amur corktree) or Phellodendron chinensis Schneid.(Chinese corktree),a deciduous tree,of the Rutaceae family.

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Plant Description and Origin Narrative.

Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image Chuan huangbo Tabular or shallowly channeled, varying in length and width, 3~6 mm thick. Outer surface yellowish-brown, even or longitudinally furrowed, some showing scars of lenticels, and remains of greyish-brown coarse bark, inner surface dark yellow or pale brown, with fine longitudinal ridges. Texture light and hard, fracture fibrous, showing lobelike layers, dark yellow. Odour, slight; taste, very bitter, viscous on chewing.
 Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image

 Guan huangbo 2~4 mm thick. Outer surface yellowish-green or pale brownish-yellow, relatively even, with irregular longitudinal fissures, scars of lenticels small and infrequently visible, occasionally remaining greyish-white coarse bark. Inner surface yellow of yellowish-brown. Texture light and relatively hard. Fracture bright yellow or yellowish-green.
 Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image

 Plant Origin Narrative:

 Corktree refers to Phellodendron amurense Rupr. (amur corktree) or Phellodendron chinensis Schneid. (Chinese corktree), a deciduous tree, of the Rutaceae family, which can grow to reach 12 to 16 m high with a spread of another 12 to 16 m. It has a broad, rounded crown without a strong central leader. It's growth rate is rapid when young. The gray-brown bark becomes fissured and corky with age.

 Branching tends to be quite low. Sexes are separate. Flowers are greenish and not very conspicuous. Females produce large clusters of fleshy black fruit which remain on the tree into the winter. Leaves are pinnately compound with 5 to 3 leaflets. The medium green leaflets are 7 cm long and develop a good yellow fall color.

 Corktree prefers a rich, moist, well drained soil. Tolerates a wide range of soil pH. Full sun. May require pruning to train up to a desirable form. The tree can be used on alkaline soils and is resistant to insects and diseases. It has a tendency to grow late into the season as seedling trees and frequently suffers winter injury to the branch tips as very young trees.

 In China, the amur corktree is mainly found in Liaoning, Jilin, Hebei, etc., while the Chinese corktree primarily grows in Sichuan, Guizhou, Hubei, Yunnan, etc.

 Corktree has interesting and corky bark, which is used by the Chinese as a heat clearing and dampness removing herb.

 The herb is reaped before and after the Qingming Festival (5th April), and is peeled off with rough bark scraped off, dried in the sun, pressed flat, fully moistened, sliced or shredded and used when raw or after being mixed and fried in brine or wine or after being charred.
 Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture imageCortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image

 Scientific Name:Phellodendron amurense

 Common Name:Amur corktree
 Hardiness Zones: 4-7
 Growth Rate: Moderate to rapid
 Site Requirements: Sun; range of soil types; withstands clay, wind, air pollution, drought, and soil compaction
 Form: Broad spreading; short trunk; open rounded crown; horizontal branches
 Height: 30 to 45'; Width: 35 to 40'
 Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image
 Leaf: 10 to 15" compound leaves with 5 to 13 leaflets; yellow to bronzy yellow fall color
 Flower/Fruit: Nonshowy yellowish green flowers in summer; .5" black fruit on female trees in fall that persists into winter
 Comments: Shallow wide spreading root system; with age the bark becomes ridged and furrowed with gray brown color; easy to transplant
 Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image

 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 cluster of small maroon to yellow-green flowers, cluster 2 to 3 inches long, 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.

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Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image Cortex Phellodendri Extract INCI Name Phellodendron Amurense Extract Amur Cork-tree extract Corktree Bark extract Huangbai extract photo picture image

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Reference:

citations1.Corktree refers to Phellodendron amurense Rupr.(amur corktree) or Phellodendron chinensis Schneid.(Chinese corktree),a deciduous tree,of the Rutaceae family.

last edit date:2nd,July.2009.