Fl. 93mm wide, facing slightly upwards; perianth segments 41mm long, very broadly ovate in outline, rounded at apex, mucronate, white, touched green at base, spreading, plane or with margins a little incurling, with midrib showing, of heavy substance, overlapping half; the inner segments narrower, shouldered at base, less prominently mucronate; corona 35mm long, funnel-shaped, white, mouth straight, broadly ribbed, a little wavy, with rim narrowly flanged and entire.