The Common Buttonbush (Cephalanthus occidentalis) is a deciduous flowering shrub or small tree in the Rubiaceae family. It is also known as the Button-Willow and the Honey-Bells.
It is native to North America. It grows in wetlands.
It grows to 1-3 metres (3-10 feet) tall.
The flowers are arranged in small, dense spherical clusters. Each flowers has a fused white to pale-yellow four-lobed corolla forming a long, thin tube connecting the sepals. The fruits is a spherical clusters of nutlets, called achenes.
It blooms in spring in the Northern Hemisphere.
Photographed in the Botanical Garden, Paris, January 2020.
Photographer: Martina Nicolls