Fl. rounded, 95 mm wide; perianth and other petaloid segments very broad in outline, blunt or slightly truncate at apex, pure white, of thick texture, overlapping half or more; the outer whorl a little inflexed; the inner whorl slightly shorter, more strongly inflexed; some shorter segments at center very strongly inflexed, with margins deeply incurled; corona segments shorter than the petaloid segments at center, crumpled and clustered among them, more loosely arranged between the surrounding whorls, opening bright yellow, becoming creamy white.