Gladiolus robertsoniae flower

A white Gladiolus robertsoniae flower may be flushed violet near its tepal tips. The unequal tepals are broadly lance-shaped to ovate, the dorsal one smallest. The lower three tepals are joined at the base to the upper laterals, the laterals longer than the median lower one. There are red lines at the base of the lower tepals visible in the throat.

The filaments are sometimes exserted, the anthers sometimes white or mauve, but mostly yellow from the ripe pollen. The ovary is ovoid, only about 3 mm long. The white style arches over the stamens, its three branches short (Goldblatt and Manning, 1998; iNaturalist).