Fl. forming a double triangle, 85mm wide; perianth segments 34mm long, roundish, very broad, blunt, white, slightly mucronate, spreading, plane, with midrib showing, of membranaceous substance, overlapping more than half; the inner segments narrower, scarcely mucronate, shouldered at base; corona 22mm long, cup-shaped, smooth, white with a narrow band of yellow or sometimes pink at rim, mouth expanded and even, with rim flanged and crenate. Mid-season