Appearance

Fatoua villosa is an annual that can grow to 2.6 ft. (0.8 m) tall. Stems are branched, erect and have hooked hairs.

Foliage

Leaves are alternate, stipulate (deciduous), petiolate, 1-3.9 in. (2.5-10 cm) long, 0.4-2.8 in. (1-7 cm) wide with toothed (pointed or rounded) margins.

Flowers

Flowering occurs in the summer and fall. Flowers are light green, unisexual, apetalous and occur in axillary cymes.

Fruit

Fruit is a one-seeded achene that is less than 0.1 in. (0.8 mm) long.

Ecological Threat

Fatoua villosa is native to East Asia and occurs in wetlands and other moist, shaded areas. It is problematic in greenhouses and nurseries. The first known population in the United States was in Louisiana in 1964.

Resources

• Mulberry Weed: Identification and Control - University of Georgia

Selected Images

Maps

Invasive Listing Sources

• Alabama Invasive Plant Council
• Alabama Noxious Weeds - Class C Noxious Weed
• California Noxious Weeds
• Georgia Exotic Pest Plant Council - Category 4
• Kentucky Exotic Pest Plant Council - Moderate Threat
• National Park Service, Mid-Atlantic Exotic Plant Management Team Invasive Plant List
• New Jersey Invasive Species Strike Team 2017 Invasive Species List
• Non-Native Invasive Plants of the City of Alexandria, Virginia
• Nonnative Invasive Species in Southern Forest and Grassland Ecosystems

References