Fl. forming a double triangle, 105 mm wide; perianth segments very broadly ovate, blunt, brilliant greenish yellow, touched white at base, with slight white mucro, spreading, concave, with margins incurling at apex, smooth and of heavy substance, overlapping half; the inner segments more narrowly ovate; corona funnel-shaped, smooth, vivid yellow, mouth ribbed, flared, lightly frilled, rim irregularly crenate. Sweetly scented.

There are no photos of "Arthur Merrill" in Daffseek.