Fls 4 per stem, 65 mm wide, facing slightly upwards; perianth segments ovate or somewhat oblong in outline, blunt or squarish at apex, scarcely mucronate, light yellow, spreading, plane or a little concave, with broad midrib showing, overlapping one-third; the inner segments more usually ovate, more nearly blunt, slightly inflexed; corona bowl-shaped, shallow, closely ribbed, light yellow, mouth straight, loosely frilled, with rim more or less entire. Color of sandy beach, fragrant.