望天树

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【中文学名】：望天树

【拉丁学名】：Parashorea chinensis Wang Hsie

【别       称】：擎天树

界:植物界

门:被子植物门            纲:双子叶植物纲

亚纲:原始花被亚纲     目:侧膜胎座目

亚目:山茶亚目            科:龙脑香科

属:柳安属                  种：望天树

《世界自然保护联盟》（IUCN）2012年濒危物种红色名录ver3.1——濒危（EN）

【产地分布】：产中国云南（勐腊、河口）、广西（那坡，巴马，龙州等）等地，在东南亚大部分热带雨林都有分布。

【药    用】：

    功效：叶解毒，外用治湿疹。

化学成分：从根皮的乙醇提取物中分离得到5个三萜化合物，分别鉴定为无羁萜（I）、无羁萜-29-酸（II）、乙酰齐墩果酸（III）、咖啡齐墩果酸（IV）、桦皮酸（V）。[4]

药理作用：咖啡齐墩果酸对四氯化碳引起的小鼠实验性肝损伤有明显的保护作用。

【用材】：

    木材坚硬、耐用、耐腐性强，不易受虫蛀；材色褐黄色，无特殊气味，纹理直，结构均匀，加工容易，刨切面光滑，花纹美观，为制造各种家具的高级用材。

Wangtian tree

【Chinese Scientific Name 】 : Wangtian tree

【Latin name 】 : Parashorea Chinensis Wang Hsie

【Nickname (s)】: Optimus Tree

Kingdom: kingdom of plants

Phylum: Angiosperm

Class: Dicotyledon Class

Subclass: Proto-perianth

Subclass: Lateral membranous placenta

Suborder: Camellia

Subfamily: Camellidae

Genus: Liuan genus

Species: Wangtian tree

IUCN Red List of Endangered Species 2012 VER3.1 -- Endangered (EN)

【Distribution】: Yunnan (Mengla, Hekou), Guangxi (Napo, Bama, Longzhou, etc.) and most of the tropical rain forests in Southeast Asia are distributed.

【medicinal use】:

Efficacy: leaf detoxification, topical treatment of eczema.

Chemical compositions: Five triterpenoids were isolated from the ethanol extract of root bark, which were identified as Bohemian terpene (I), Bohemian terpene-29-acid (II), acetyloleanolic acid (III), casteoleanolic acid (IV) and betulinic acid (V). 【4]

Pharmacological effect: oleanolic acid has obvious protective effect on experimental liver injury caused by carbon tetrachloride in mice.

【Material】:

Wood is hard, durable, resistant to decay, not easily moth-eaten; The material color is brown yellow, no special smell, the texture is straight, the structure is uniform, the processing is easy, the plane cutting surface is smooth, the pattern is beautiful, for the manufacture all kinds of furniture advanced material.