The two-lipped flower of Gladiolus scullyi is pale purple on the upper parts of its tepals that are united at the base of the tube. The tepals are lance-shaped and unequal, the dorsal one biggest. The tepal margins may be slightly wavy in their upper parts, more so at the irregularly twisting tips. The funnel-shaped flower becomes about 1,3 cm long
The central, dorsal tepal curves down over the cluster of stamens on long filaments. The three tepals of the lower lip are greenish yellow on more than their lower halves.
Among the upper tepals, each of the lateral pair has a narrow, creamy yellow band up the tepal centre, distinctly delineated by purple-brown margins. This band widens in the centre of the tepal, diminishing to both extremes (Goldblatt and Manning, 1998; Le Roux, et al, 2005; iNaturalist).