Silverthorne
Classification:
3 W-W[ Small-Cupped ]
Season:
Mid-Season
Height:
Standard - 32.5 to 67.5 cm (12.8 to 26.6 in)
Hybridizer:
Registered:
Yes, 1997
Seed Parent: 
Cool Crystal 3 W-GWW 
Grant E. Mitsch, United States
Year Registered: 1966
(Chinese White x unknown)
Cool Crystal
Pollen Parent: 
Delos 3 W-GWW 
J.M. de Navarro, England
Year Registered: 1968
Tobernaveen x Verona
Delos
Seedling Number:
S440
Descendants:
None
Comments

Fl. 105 mm wide, pure white; perianth segments ovate, slightly reflexed, very smooth, deeply overlapping; corona shallow bowl-shaped, with rim neatly crenate.