Fls forming a double triangle, 45mm wide; perianth segments 18mm long, very broadly ovate, mucronate, white, spreading, plane or with margins incurved, smooth and of heavy substance, overlapping half or more; the inner segments narrower, shouldered at base; corona 6mm long, bowl-shaped, ribbed, light lemon yellow, mouth straight and wavy, with rim notched. Sweetly scented. Shows its polypoidy in all parts of the plant, very thick substance, entire plant very sturdy, lemon yellow cups. Sweetly scented.

 Part of Bill Welch’s “Friends Series.”  Named for Bill Welch’s friend, Rosanna.