Fl. forming a double triangle, 103mm wide; perianth segments 40mm long, very broadly ovate, blunt, yellow with pale mucro, spreading, plane or with margins a little incurved, with midrib showing, of membranaceous substance, overlapping half or more; the inner segments narrower, somewhat shouldered at base, margins a little wavy; corona 25mm long, funnel-shaped, angle, mouth straight, narrowly ribbed, wavy and frilled, with rim notched. Mid-season