Fl. 82 mm wide, opening soft yellow, becoming white, sometimes touched yellow at corona rim; perianth segments very broadly ovate, blunt or rounded at apex, only very slightly mucronate, spreading, plane, with margins sometimes incurling at apex, of good substance, overlapping half or more; the inner segments a little inflexed, with margins incurved; corona bowl-shaped, widely expanded, narrowly ribbed, mouth sometimes split and overlapping, lightly frilled, with rim dentate.