The scientific name Senna siamea is native to the Indian subcontinent (India to Sri Lanka) and Southeast Asia (i.e. Cambodia, Laos, Myanmar, Thailand, Vietnam, Indonesia, Malaysia). In China, it also has a long history, such as Yingjiang County, Zhenkang County, Zhenkang County, Malipo County, Puning City, Xishuangbanna (Jinghong City) in Yunnan, and it is planted in Taipei, Fujian, Guangzhou, Ningming, Guangxi, Hong Kong and other regions. Iron Knife Wood prefers a tropical environment. Commonly known as black heart tree, black heart wood, each country or region is called differently.

Iron knife wood from Bali, Indonesia
Iron knife wood has been widely introduced into other humid tropical climates of the world, most recently in Australia (especially Cape York, Queensland), Mexico, the Caribbean (Dominican Republic and Puerto Rico), the Pacific, (Fiji and French Polynesia) and Africa. Has been introduced. Due to its rapid growth and high-yielding seeds, it is likely to pose a significant risk of invasion in other countries where it already exists and is cultivated.
Iron knife wood
Iron knife wood is particularly suitable for lowland tropical regions with monsoon climates, suitable at altitudes of up to 1300 meters, with an average minimum temperature of 20 °c, a temperature range of 14 – 28 ° c, an average maximum temperature of 31 ° c, and a range of 24 – 36 ° c. It grows best on deep, well-drained fertile laterite soils, and its pH range is preferably 5.5 – 7.5.
Iron knife wood (Puning City Xinjing flower tree) courtesy of the picture
Iron knife wood is a small and medium-sized evergreen tree, usually 10 to 12 meters, rarely more than 20 meters large trees. It has yellow flowers with slender, alternating and pinnate compound leaves. Glabrous, slightly curved and brown pods grow into dense clusters, 15 to 30 cm long. Iron knife wood can withstand strong winds, can grow well in open places, and it also grows rapidly, so it is widely planted for ornamental and shading purposes.
The iron knife wood yellow flowers all over the mountain are very spectacular
The dry density of iron knife wood gas is 0.81-1.01g/cm3. Its wood is hard and durable, and it is often used to make furniture materials. The origin of its name is precisely because its wood is as hard as an iron knife, or the iron knife cannot easily break through the trunk of the tree. Iron knife wood can be used as fuel, high combustion value, durable fire. Because of this, in Xishuangbanna, the Dai people have used iron knife wood as fuelwood for generations. The branches of iron knife wood germinate very strongly, so iron knife wood fuelwood can be often cut down. The Dai also called the iron knife wood the knife wood.
Iron knife wood leaves and roots have medicinal value, the leaves can be used as a laxative, and the roots have the effect of repelling intestinal parasites. Young fruits and leaves can be eaten as vegetables. When eating, it should be blanched 3 times to remove toxins (be careful when processing wood, iron knife wood heartwood powder can make the eyeballs inflamed, skin foam, pods and leaves contain alkaloids, can make pigs deadly. ), flowers and young fruits are used in curry.
Iron knife wood leaves
Iron knife wood is widely cultivated and has many uses. In Kenya, macerated roots are used along with other herbs to treat snake bites and diabetes. In Ivory Coast (Côte d'Ivoire), small doses of decoction root are used to treat angina and malaria; in Thailand the road is named after this. It is also cultivated as a windbreak and forage plant. Its hardwood is used to decorate guitars and the Harpon; in Myanmar, prepared leaves are taken in capsule form as laxatives and sleep aids; and in China, people like to use the soup of leaves and stems as an aperitif to fight arthritis swelling.
Iron knife wood and iron wood, not only a word difference, the name is surprisingly similar, iron knife wood is the national standard mahogany of the Eight Classics, so what is iron wood? Share in the next issue.
"Rising Knowledge" national standard mahogany 22 - African cliff beanwood (African black chicken wing, West African chicken wing
"Rising Knowledge" National Standard Mahogany No. 23 - White Flower Cliff Bean Wood (Burmese Chicken Wing Wood, Black Chicken Wing)
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