Fl. 108 mm wide; perianth segments 42 mm long, broadly ovate, blunt, prominently mucronate, white, touched green at base, spreading, plane, smooth, overlapping half; the inner segments narrower, shouldered at base, less prominently mucronate; corona 20 mm long, bowl-shaped, broadly ribbed, deep lemon yellow, with green at base and a thin band of orange at rim, mouth wavy, irregularly lobed, with rim minutely ribbed. Sunproof