Fl. 110mm wide; perianth segments 40mm long, very broadly ovate, blunt, mucronate, greenish yellow, spreading, concave, with margins incurved, smooth and of heavy substance, overlapping half; the inner segments narrower, shouldered at base, less prominently mucronate; corona 25mm long, split to base, the six segments, each closely overlying a perianth segment, forming an inner and an outer whorl of three, vivid yellow, frilled, with lobes overlapping. Strongly scented.