Fl. forming a double triangle, 105 mm wide; perianth segments broadly ovate, acute and prominently mucronate, greenish ivory white becoming greener with age, slightly reflexed, plane, or sometimes a little concave at apex, smooth and of good substance, with broad midrib showing, overlapping half; corona short funnel-shaped, angled and lightly ribbed, pale lime green, with moss green at base and brilliant greenish yellow at rim, mouth slightly wavy, rim regularly crenate.