Halfa
Classification:
1 W-Y[ Trumpet Long-Cupped ]
Season:
Early to Mid-Season
Height:
Standard - 32.5 to 67.5 cm (12.8 to 26.6 in)
Hybridizer:
Registered:
Yes, before 1920
Seed Parent: 
Queen of the West 1 Y-Y 
W. Polman-Mooy, the Netherlands
Year Registered: 1907
Queen of the West
Pollen Parent: 
White Emperor 1 W-W 
Rev. G.H. Engleheart, England
Year Registered: 1913
J.B.M. Camm x Madame de Graaff
White Emperor
Fertility:
Seed fertile
Used as parent:
5 times as seed
Comments

Perianth segments broadly ovate, fairly prominently mucronate, creased, overlapping one-third to a half; the inner segments twisted and with margins nicked; corona cylindrical, broadly ribbed, soft yellow, rim notched and tightly rolled.