Fl. forming a double triangle, 103 mm wide; perianth segments broadly ovate, blunt, not noticeably mucronate, brilliant greenish yellow, touched pale yellowish white at base and at midrib towards apex, spreading, plane, smooth, overlapping one-third to a half; the inner segments with margins wavy; corona funnel-shaped, lightly ribbed, pale yellowish white ), mouth flared, more strongly ribbed, frilled, rim notched and crenate, with margins minutely crenate. Resembles ‘Grand Prospect’ but with the corona of purer white.