Fl. 115 mm diameter; perianth segments broadly ovate, blunt, obscurely mucronate, pure white, slightly reflexed, concave, overlapping half; the inner segments sharply narrowing to base, with margins incurving or wavy towards apex; corona cylindrical, smoothly 6-angled, ivory white, mouth ribbed, straight or very slightly flared, a little wavy, with rim minutely and closely notched.