Term:

Filaments golf club-shaped.
Definition:

A filament that is unidimensional for the lower third of the length and enlarged and shaped like the head of an old fashioned golf club driver.
Notes:

Filament shape may change depending on the position of the stamen within a flower, i.e., gold club-shaped filaments may occur on the anterior outside part of the staminal ring but not in other parts of the staminal ring.