Most are basically triangular, with the inner margin almost straight to rounded to broadly rounded. The outer margin, though commonly two-sided, is more variable. Like all Anthurium , sect. 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.