Usually six flowers bloom in a bell-shaped involucre of five partly fused bracts.

The corolla is likewise clothed and is partly fused to form a cavity.

The upperside of the abdomen has two strong white dorsal lines, sometimes partly fused.

These glands, for which either 2 or 2 pair can be partly fused together, are about half as long as the ovary.

The first two isomers at the anterior dorsal end are partly fused.

This is supported on a five-lobed calyx, within an arrangement of up to 10 partly fused bracts.

Inflorescences are characterized by solitary heads (sometimes in cymes), with phyllaries free or partly fused.

Five to nine flowers bloom from a cup-shaped involucre of several partly fused bracts.

The first two isomers at the anterior dorsal end are partly fused together to form a headshield-like structure.

Adelphous - the androecium with the stamen filaments partly or completely fused together.