Fl. rounded, 87mm wide, facing downwards; perianth segments 37mm long, roundish, very broad, mucronate, white, reflexed, plane, smooth and of heavy substance, overlapping half or more; the inner segments narrower, shouldered at base, less prominently mucronate, with margins incurling; corona 24mm long, cup-shaped, smooth, opening yellow at base, becoming pink, mouth slightly flared, irregularly ribbed and wavy, with rim crenate.

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