Fl. 2-3 per stem, 68 mm wide; perianth segments broadly ovate, bright lemon yellow, with a broad band of white at base and a white mucro, spreading or a little reflexed, with margins incurved or more strongly incurling, overlapping one-third; the inner segments inflexed, sometimes reflexed in upper part; corona funnel-shaped, short and broad, very loosely ribbed, ivory white, shaded with buff yellow at base and tinted with a clearer white at rim, mouth flared and frilled, split in places and overlapping.