Fl. forming a double triangle, 70 mm wide; perianth segments very broadly ovate in outline, blunt or squarish at apex; prominently mucronate, pure white, tinged yellow at base, slightly reflexed, concave, smooth, overlapping half; the inner segments more nearly spreading, with margins incurling; corona disc-shaped, lightly ribbed, yellow, tinged green at base, with a band of red at rim, mouth wavy, sometimes split and overlapping, with rim minutely and irregularly notched and dentate.