Fls up to 11 per stem, 30-35 mm wide; perianth segments broadly ovate in outline, blunt or rounded at apex, prominently mucronate, opening pale greenish yellow, becoming greenish white, spreading, concave, with margins incurling, smooth, overlapping one-third to a half; the inner segments slightly narrower; corona cup-shaped, smooth, opening deep orange-yellow with a greenish tinge, becoming near to strong orange, mouth straight and even, with rim entire. Sunproof. Sweetly scented.