Fl. forming a double triangle, 94mm wide; perianth segments 33mm long, broadly ovate, blunt or somewhat truncate, yellow, with slight white mucro, spreading, plane, smooth and of heavy substance, overlapping half; the inner segments narrower, shouldered at base, scarcely mucronate; corona 26mm long, funnel-shaped, smooth, yellow, mouth straight, wavy to lightly frilled, with rim crenate. Mid-season