Dr. Tom D. Throckmorton
d 2000. Des Moines, Iowa, USA. Creator of the daffodil colour-coding system introduced in 1975
Perianth segments pale yellow; corona darker in tone.
The Benson, 2 Y-Y, Dr. Tom D. Throckmorton, United States, 1975Photo #6088 Dr. Tom D. Throckmorton, USA