Wahlenbergia Schrad. ex Roth.
Flowers regular, funnel-shaped or rotate. Stamens free Wahlenbergia
Style constricted in the region of the pollen collecting hairs either close to the stigmatic branches (when the unopened stigmatic lobes appear almost globular) or c. half-way down (when the upper part of the style is distinctly thicker than the lower part)
Style constricted about half-way down. Corolla campanulate; lobes less than 4 times as long as the tube