Fl. forming a double triangle, 105mm wide; perianth segments 50mm long, very broadly ovate, blunt, mucronate, brilliant greenish yellow, spreading to a little inflexed, concave, with margins incurved, smooth and of heavy substance, overlapping half; the inner segments much narrower; corona 38mm long, funnel-shaped, ribbed, opening light greenish yellow, becoming white, mouth a little expanded, wavy and lightly lobed, with rim dentate and broadly flanged. Sweetly scented.