Dr. Tom D. Throckmorton
d 2000. Des Moines, Iowa, USA. Creator of the daffodil colour-coding system introduced in 1975
Fl. 90 mm wide; perianth segments opening white, becoming yellow, with a lighter tone at margins; corona white, with green at base and the color of the perianth at rim.
Wedding Band, 3 Y-WWY, Dr. Tom D. Throckmorton, Etats-Unis, 1977Photo #56498 Hubert Bourne, Etats-UnisWedding Band, 3 Y-WWY, Dr. Tom D. Throckmorton, Etats-Unis, 1977Photo #51454 Heath Family Archives, Etats-Unis