Fl. 105 mm wide; perianth segments very broadly ovate in outline, shouldered at base, blunt or rounded at apex, only slightly mucronate, greenish white, spreading, plane, smooth and of heavy substance, overlapping half; the inner segments more narrowly ovate, a little inflexed, slightly twisted; corona cup-shaped, angled, greenish white, with grayish yellow-green at base and a band of light greenish yellow above that, with a narrow band of red-pink at rim, mouth expanded and frilled, with rim dentate.