Litsea cubeba is an aromatic plant belonging to the Lauraceae family, naturally distributed from the Eastern Himalayas through southern China and Southeast Asia to parts of Malesia. The species is recorded in Nepal, India, Bangladesh, Myanmar, China, Taiwan, Thailand, Laos, Vietnam, Cambodia, Malaysia and Indonesia. In the international fragrance industry, Litsea cubeba is commonly known as May Chang or Aromatic Litsea. In Vietnam, it is known as Màng Tang, while in Thailand, local names include Chakhai-ton in the northern regions and Takhrai-ton in other areas. In Chiang Mai, Chakhai-ton is recorded as a local name for the species.

Màng Tang is known by various local names, reflecting its wide distribution and long history of use across the region:

• Vietnamese Name: Màng Tang

• English Names: May Chang · Mountain Pepper · Litsea Cubeba

• Thai Names: ตะไคร้ต้น (Takhrai-ton) · จะไคร้ต้น (Chakhai-ton)

• Chinese Name: 山苍子 (Shān Cāng Zǐ)

Litsea Cubeba is a fast-growing pioneer species that commonly occurs in open areas, along forest edges and in regenerating forest landscapes. It can grow across a broad range of elevations, from lowland areas to mountainous regions; in parts of Southeast Asia, it has been recorded at approximately 700–2,300 m above sea level. In Thailand, the species occurs in mountainous and forested areas, including Chiang Mai, where it is locally known as Chakhai-ton.

Litsea Cubeba is a shrub or small tree. Its various parts, particularly the leaves and fruits, contain aromatic compounds and release a characteristic fragrance when crushed or bruised. The species is dioecious, with male and female flowers generally occurring on separate plants. The flowers are pale yellow to creamy white and grow in small clusters in the leaf axils or on short branches. The fruits are spherical, green when immature and turning dark purple to black when ripe.

The species is characterized by relatively rapid growth and good adaptation to open environments. It commonly thrives in areas with abundant sunlight and is often found along forest edges, in open areas and in secondary forests.

The growing season may vary depending on geographical location, elevation and climatic conditions. According to botanical data from Thailand, Litsea Cubeba generally flowers from around October to February, followed by fruiting from March to August. Harvesting periods may vary depending on the region and intended use. For materials intended for essential oil extraction, the stage of fruit development can influence the chemical composition and characteristics of the resulting material.

In Vietnam, Màng Tang (Litsea cubeba) is mainly distributed in midland and mountainous regions, particularly in the northern mountainous areas. The species has been recorded in provinces including Lào Cai, Lai Châu, Sơn La, Cao Bằng, Lạng Sơn, Bắc Kạn, Tuyên Quang, Yên Bái and Hòa Bình, and is also found in parts of Central Vietnam and the Central Highlands.

Litsea Cubeba commonly grows naturally in secondary forests, regenerating forests following shifting cultivation, along forest edges and in areas with abundant sunlight, from low elevations up to approximately 1,500 m above sea level. As a relatively fast-growing species with good adaptability to open environments, Litsea Cubeba is often found in areas undergoing natural forest regeneration and recovery.

Differences in terrain, climate, elevation, soil conditions and growing environment between regions can influence the flowering and fruiting periods, as well as the chemical composition and olfactive profile of the resulting material.