de Graaff 1931; 1921; 1925; 1938; Barr 1923; 1928; Meadow 1931; Millikin 1937; American Iris Society Bulletin 65: 32.May 1937 Illustrated; Salbach1938; Wayside 1938; Pudor 1939; Trials 9A 405. |
Scheepers 1936 catalog notes "LEONARDO DA VINCI: A very beautiful and refined flower. Standards, lemon-yellow. Falls, deeper yellow. $.85 for 10; $6 per 100." illustrated in Scheepers 1941 catalog |