Fl. 100mm wide; perianth and other petaloid segments in three whorls; the outer whorl 45mm long, very broadly ovate, truncate, brilliant greenish yellow, with slight white mucro, spreading, slightly concave or with margins incurling, with midrib showing, of heavy substance, overlapping half; the inner whorls narrower, becoming shorter and successively more strongly inflexed, concave; corona segments 25mm long, interspersed among the petaloid segments and clustered at center, orange, heavily frilled, with rim entire. Strongly scented.