Aposeris

Aposeris is a monotypic genus of flowering plants in the family Asteraceae, native to Europe. The sole species in this genus is Aposeris foetida. It is commonly known as fetid-tassel-flower or stinking-tassel-flower. This perennial herb is characterized by its distinctive fetid odor, which is more pronounced when the plant is bruised.

Aposeris foetida typically grows in damp, shaded woodland habitats, often found in mountainous regions. It prefers acidic soils and is often found growing alongside other woodland flora. The plant produces a rosette of basal leaves, which are pinnately divided. The flower stalks are erect and bear a single, dandelion-like flower head. The ray florets are yellow and arranged in a single row. The seeds are achenes, which are dispersed by wind.

The common name "fetid-tassel-flower" refers to both the unpleasant smell of the plant and the appearance of its seed heads, which can resemble tassels. Despite its odor, the plant has been historically used in some traditional medicine practices, though its efficacy and safety are not scientifically established. Aposeris foetida is not widely cultivated and is primarily of interest to botanists and those studying European flora. Its distribution is concentrated in central and southern Europe.