Fl. forming a double triangle, 125mm wide; perianth segments 54mm long, broadly ovate, blunt, slightly mucronate, spreading, plane or with margins a little incurved, smooth and of heavy substance, overlapping half; the inner segments narrower, with midrib showing; corona 39mm long, funnel-shaped, broadly ribbed, mouth straight and shallowly lobed, with rim crenate. 

Believed to be a relative of the family.

There are no photos of "Mary B. Haley" in Daffseek.