Hydrangeaceae

繡球屬 Hydrangea hydrangeoides -溫哥華哥倫比亞大學植物園 UBC Botanical Garden, Vancouver- (40550612852)

Hydrangeaceae is a family of flowering plants belonging to the order Cornales. This family is known for its diverse species of shrubs, small trees, and lianas, which are primarily found in eastern Asia and North and South America. The most well-known genera within this family include Hydrangea, Philadelphus, and Deutzia. These plants are celebrated for their ornamental value, featuring showy flowers and, in some species, notable bark and autumn foliage.

Characteristics

Members of the Hydrangeaceae family exhibit a wide range of characteristics but share some common features. They typically have simple, opposite leaves that can be deciduous or evergreen. The flowers are usually gathered in inflorescences and can be highly decorative, with some species having large, showy blooms while others have smaller, more modest flowers. The fruit of Hydrangeaceae plants is most commonly a capsule, but can also be a berry in some species.

Genera

The Hydrangeaceae family includes several genera, among which Hydrangea and Philadelphus are the most widely recognized:

• Hydrangea – Known for their large flower heads, hydrangeas are popular in gardens and floral arrangements. They can change color based on the soil pH.
• Philadelphus – Also known as mock orange, this genus is appreciated for its fragrant, white flowers that resemble those of oranges.
• Deutzia – These shrubs are valued for their clusters of white or pink flowers, making them a favorite among gardeners for ornamental use.
• Other genera include Schizophragma, Carpenteria, and Jamesia.

Distribution and Habitat

Hydrangeaceae species are found in a variety of habitats, ranging from woodlands and forests to mountainous regions. While the family has a broad distribution, with species native to many parts of the world, the highest diversity is found in eastern Asia. These plants are adaptable to a range of climatic conditions, but most prefer moist, well-drained soils.

Cultivation and Uses

Many species within the Hydrangeaceae family are cultivated for their ornamental value. They are used in landscaping, as garden plants, and in floral arrangements. Hydrangeas, in particular, are popular for their vibrant flowers and ability to thrive in a variety of garden settings. Beyond ornamental use, some species have been used in traditional medicine, although scientific evidence supporting these uses is limited.

Conservation

While many Hydrangeaceae species are common and widely cultivated, some are threatened by habitat loss and overcollection. Conservation efforts are important to ensure the survival of these species in their natural habitats.