Fl. 96mm wide; perianth segments 40mm long, broadly ovate, blunt, mucronate, opening whitish, becoming yellowish, spreading to a little reflexed, plane or with margins slightly incurved, smooth and of membranaceous substance, overlapping one-third to a half; the inner segments shouldered at base, not noticeably mucronate; corona 36mm long, funnel-shaped, smooth, mouth a little expanded, regularly ribbed, wavy and three-lobed, with rim flanged and dentate.