Fl. rounded, 100 mm wide; perianth and other petaloid segments in three complete whorls, regularly arranged, with a whorl of three at center, broadly or very broadly ovate in outline, blunt or rounded at apex, only slightly mucronate, white, deeply overlapping; the first and second whorls spreading, plane; the third whorl inflexed, folded along midrib, with margins wavy and incurled; the segments at center strongly inflexed with margins very deeply incurved; corona segments three-quarters the length of the petaloid segments and loosely arranged among them, deep coral pink, lightly frilled.

Named in honor of the Duncan’s dear friend of the family, Dave Vivash.