|winter rain climate
Gladiolus floribundus Jacq. grows on dry clay, sandy or limestone flats and slopes over a broad area of the winter rainfall Cape. It has white to cream or pinkish flowers with a dark median streak on all of the tepals and blooms in late spring. The first two photos taken by Cameron McMaster near Napier in the Overberg. Photos three, four, and five were taken by Andrew Harvie. Photo three was also taken in the Overberg in the De Hoop Nature Reserve. The last two were taken on a a rocky ridge top in the Swartberg Mountains.
Photos below from the book Plants of the Klein Karoo courtesy of Jan and Anne Lise Schutte-Vlok who write that this species grows up to 60 cm tall with broad grey green leaves. It can be confused with Gladiolus grandiflorus which has a shorter tube.