Fl. 100 mm wide; perianth segments very broadly ovate in outline, shouldered at base, blunt or rounded at apex, only slightly mucronate, greenish white, touched green at base, spreading, a little concave, with midrib showing, of heavy substance, overlapping half; the inner segments more narrowly ovate, a little inflexed; corona bowl-shaped, shallow, ribbed, orange-red, with vivid yellow in lower third and green at base, mouth expanded, a little frilled, with rim irregularly crenate.