From National Iris Gardens catalog for 1936: “Our introduction of 1936 which is THE IRIS OF THE YEAR – a distinctly new shade never before found or even approached in Iris flowers. The large blossoms are a dark vinaceous grey throughout, including S., F., style arms, and beard. Best described as a dark dove grey. Color must be seen to be fully appreciated. It inherits this unique color hue from both parents, each of which is an odd shade. Michelangelo is much darker than either parent, and shows no blue, purple, or red in its petals. Its coloring makes it stand out in any group of varieties with which it is planted. The most distinctive Iris flower we have ever see – and all American Iris Society judges who have seen it agree with us.”
(Jean Cayeux X Tuscany Gold), HM 1937.