Fls 2-3 per stem, 65 mm wide, shining greenish yellow; perianth segments broadly ovate, blunt, becoming paler in tone with maturity, with slight white mucro, spreading or a little reflexed, plane, with margins a little incurling, smooth, with midrib showing, overlapping one-third to a half; corona split to two-thirds its length, the six segments one-third to a half as long as the perianth segments and opposite and closely overlying them, bi-lobed, becoming deeper in tone with maturity, with shades of honey yellow at base, rim entire or irregularly crenate.