Fl. forming a double triangle, 87mm wide; perianth segments 35mm long, broadly ovate, blunt, yellow, with slight pale mucro, spreading, plane, with margins incurling at apex, smooth and of heavy substance, overlapping half; the inner segments narrower; corona 37mm long, narrow funnel-shaped, smooth, mouth straight, even, lightly frilled and shallowly lobed, with lobes somewhat overlapping, with rim entire. Mid-season