Pachyneurium has four stamens, each of which is affixed at the base of a tepal. Stamens are tightly compressed between the tepals and the pistil and are not visible without dissection prior to anthesis. Fresh filaments are usually somewhat succulent with a thin epidermis. Shortly before maturity of an individual stamen, the anther is pushed out from between the tepal and the pistil by elongation of the filament. Once exposed, both thecae of the anthers promptly open by longitudinal slits.
Dehiscence is extrorse.
For further details of stamens see section on Flowering Behavior. Typical of other sections of Anthurium , the pistils of sect. Pachyneurium are bilocular, more or less oblong-ovoid, and are tightly compressed in between the four tepals. A well-defined style is always lacking. The pistils are visible only at the apex and sometimes are almost completely covered by the tepals.