Platycladus

Platycladus orientalis Simatai

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Platycladus orientalis

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Platycladus orientalis 20070330 3

Platycladus is a genus of evergreen coniferous tree in the cypress family Cupressaceae. It is a monotypic genus, containing only one species, Platycladus orientalis, commonly known as the Chinese thuja, Oriental arborvitae, or biota. This tree is native to northeastern Asia, particularly in China, Korea, and the Russian Far East.

Description

Platycladus orientalis is a small to medium-sized tree, typically reaching heights of 10-20 meters, with a trunk diameter of up to 1 meter. The bark is reddish-brown, peeling in vertical strips. The leaves are scale-like, 2-4 mm long, and arranged in decussate pairs. The cones are 15-25 mm long, with 6-8 scales arranged in opposite pairs, each scale bearing 2-3 seeds.

Habitat and Distribution

Platycladus orientalis is found in a variety of habitats, including mixed forests, hillsides, and riverbanks. It is well-adapted to dry, rocky soils and can tolerate a range of climatic conditions. The species has been widely cultivated outside its native range, particularly in Europe and North America, for ornamental purposes.

Uses

The wood of Platycladus orientalis is durable and resistant to decay, making it valuable for construction, furniture, and other wood products. The tree is also used in traditional medicine, particularly in Chinese medicine, where it is believed to have various health benefits. Additionally, it is a popular choice for bonsai and as an ornamental tree in gardens and parks.

Cultivation

Platycladus orientalis is relatively easy to cultivate and is tolerant of a wide range of soil types and conditions. It prefers full sun but can also grow in partial shade. The tree is drought-tolerant once established and requires minimal maintenance. Propagation is typically done through seeds or cuttings.

Related Species

While Platycladus is a monotypic genus, it is closely related to other genera in the Cupressaceae family, such as Thuja, Chamaecyparis, and Cupressus.

Conservation Status

Platycladus orientalis is not currently considered to be at risk of extinction. However, habitat loss and over-exploitation for its wood and medicinal properties could pose future threats.

See Also

• Cupressaceae
• Thuja
• Chamaecyparis
• Cupressus
• Chinese medicine