Some trees make a sweet sap. 
Some trees make a sweet sap. 
Styrax is a group of about 130 plants. Most are large shrubs or small trees. 
These plants make a special sap called resin. People get it by piercing the bark. This resin is called benzoin. It has a smell like vanilla.
Resin can help with health, too. Doctors use a liquid form called tincture of benzoin. It can help heal small injuries. It works as a disinfectant, which is a way to clean germs.
Styrax is a group of about 130 different species. These plants are mostly large shrubs or small trees. Most of them grow in warm areas of the Northern Hemisphere. You can find many in eastern and southeastern Asia. Some also grow across the equator in South America. These trees can grow between 2 and 14 meters tall. 
These trees produce a special substance called resin. People collect this resin by piercing the tree bark. The dried resin is often called benzoin or storax. It has a scent that smells like vanilla. 
People have used Styrax for a very long time. In ancient times, people used storax resin for perfumes and medicines. The Greek writer Herodotus wrote about it in the 5th century BC. He mentioned that different kinds of storax were traded by merchants. 
There are many specific types of Styrax trees to know. For example, Styrax benzoin grows in Sumatra and Indonesia. S. tonkinensis is known as Siam benzoin.
Styrax connects to many things in our daily lives. The resin is used to make a liquid called tincture of benzoin. You might see this in a first aid kit for small cuts. It works as a disinfectant to clean a wound.
Styrax is a genus containing approximately 130 species of large shrubs and small trees. These plants belong to the family Styracaceae. Most species are native to the warm temperate to tropical regions of the Northern Hemisphere. You can find many in eastern and southeastern Asia. Some species also grow across the equator in South America. These trees typically grow between 2 and 14 meters tall. 
A primary feature of many Styrax species is the production of resin. This resin is a dried exudation that forms when the tree bark is pierced. The resulting substance is commonly called benzoin or storax. It is highly valued for its vanilla-like scent in perfumery. 
There are several distinct types of benzoin resin traded internationally. Some of the most common come from species native to Sumatra, Java, and Thailand. For example, Styrax tonkinensis is known as Siam benzoin. Styrax benzoin is referred to as Sumatra benzoin. Another common variety is Styrax benzoides. The name "benzoin" likely comes from the Arabic term "lubān jāwī," meaning "Javan frankincense." This linguistic link shows that Arabic speakers were aware of the resin's origins. It also suggests that international trade in these resins was major by the late Middle Ages.
Human history with Styrax spans back to antiquity. The Greek historian Herodotus wrote about different kinds of storax in the 5th century BC. He noted that Phoenician merchants traded these resins. There is some historical uncertainty regarding which specific plants ancient sources called "storax." Some researchers believe they may have been referring to the Turkish sweetgum. This is a different tree in the Altingiaceae family that produces a similar resin. Today, little trade exists for Turkish sweetgum because the species has declined. However, Southeast Asian benzoin resins remain widely available.
The resin has many significant uses in medicine and culture. In the Middle Ages, benzoin became a key part of various medicinal recipes. In 1686, a Venice treacle recipe called "Theriaca Andromachi Senioris" included benzoin resin. In the 19th century, many cosmetics used a substance called tincture of benzoin. This is benzoin resin dissolved in alcohol. Today, tincture of benzoin is used in first aid for small injuries. It acts as a disinfectant and a local anesthetic to help healing. It also contains benzoic acid, which provides antibiotic activity.
Beyond medicine, Styrax plays a role in various cultural rituals. Storax incense is used as an air freshener in the Middle East. It is also burned during Buddhist and Hindu rituals. 
While many Styrax species thrive, some face serious conservation challenges. Some species have declined due to habitat degradation and unsustainable logging. Many of these are classified as vulnerable by the IUCN. A notable example is the palo de jazmin, or Styrax portoricensis. This species is nearly extinct, with only four trees known to survive in one location. Because they are so rare, a single hurricane could wipe out the entire species. Protecting these specific habitats is essential for the survival of the genus.
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