Fl. 115 mm wide, greenish white; perianth segments broadly to very broadly ovate, blunt, only slightly mucronate, spreading or slightly reflexed, plane or a little concave, smooth and of heavy substance, overlapping half; the inner segments narrower, shouldered at base, slightly inflexed at base and recurved at apex, with margins lightly wavy; corona funnel-shaped, loosely ribbed, mouth flared, lobed, lightly frilled.

Named in honor of a dear friend, Mrs. Ben (Eve) Robertson of South Carolina, USA.