The Gladiolus cunonius inflorescence is few-flowered spike that presents its two-lipped blooms in two opposing ranks. The plant is sometimes referred to as the spoon flower on account of the shape of its dorsal tepal. The lateral upper tepals, about half as long as the dorsal one, flank it with upturned, rounded tips. The lower three tepals are tiny and greenish. The flower tube is cylindrical, up to 1,5 cm long.
The subtending, pointed bracts at flower bases in picture are brownish green, tinted purple.
The plant is also commonly known as the cockscomb gladiolus (Privett and Lutzeyer, 2010; Manning, 2007; iNaturalist).