YELLOW DISEASE OF HYACINTHS. 



Table Showing Sensitive and Resistant Varieties oj Hyacinth. 



339 



Hyacinths much subject to the yellow disease. 



Hyacinths very resistant to the yellow disease. 



Charles Dickens, single rose 



*La Grandess, single white 



*La Neige, single while 

 Captain Boyton, single light blue 



*Czar Peter, single light blue] 



*Grand Lilas, single light blue 



*Lord Derby, single light blue 



*Hermann, single yellow 



*Iva Tour D'Auvergne, double while 



To this list the following should be added 

 as a result of the additional inquiry respect- 

 ing discarded sorts already mentioned: 

 La Pr^coce, single white 

 Marie Stuart, single white 

 Miss Nightingale, double white 



*Mont Blanc, single white 



*Orandates, single light blue 

 Prince de Taillerand, single light blue 



*King of the Blacks, single blue black 



*La Citronidre, single yellow 

 Minerva, double yellow 



*Robert Steiger, single red 



Baron van Tuyll, single rose 



Moreno, single rose 



Baroness van Tuyll, single white 

 *Grandeur k Merveille, single bluish white 



La Franchise, single bluish white 

 *Grand Maitre, single light blue 

 *La Peyrouse, single light blue 



Regulus, single light blue 

 *King of the Blues, single dark blue 

 *Marie, single dark blue 



King of the Yellows, single yellow 



Yellow Hammer, single yellow 



Princess Royal, double red 



Boquet Royal, double rose 



La Virginite, double bluish white 



Crown Prince of Sweden, double dark blue 



fFound also accidentally by the writer in 1897 to be specially sensitive to pure-culture inoculations of Bact. 

 hyacinthi. 



For comparison with the above table I have compiled the following list from Wakker's 

 Dutch report for 1885, the same being the opinion of six hyacinth growers of that time 

 respecting susceptibility to this disease of 34 of the 35 varieties mentioned in the preceding 

 list. When the sum is less than six the other growers made no report. 



Number of growers reporting the variety as: 



Variety. 



Charles Dickens, single rose 



La Grandess, single white 



La Neige, single white 



Captain Boyton, single light blue 



Czar Peter, single light blue 



Grand Lilas, single light blue 



Lord Derby, single light blue 



Hermann, single yellow 



La Tour d'Auvergne, double white 



La Precoce, single white 



Marie Stuart, single white 



Miss Nightingale, single white 



Mont Blanc, single white 



Orondates, single light blue 



Prince de Taillerand, single light blue 



King of the Blacks, single blue black 



La Citroni^re, single yellow 



Minerva, double yellow 



Robert Steiger, single red 



Baron van Tuyll, single rose 



Moreno, single rose 



Baroness van Tuyll, single white 



Grandeur d Merveille, single bluish white . . 



Grand Maitre, single light blue 



La Peyrouse, single light blue 



Regulus, single light blue 



King of the Blues, single dark blue 



Marie, single dark blue : 



King of the Yellows, single yellow 



Yellow Hammer, single yellow 



Princess Royal, double red 



Boquet Royal, double rose 



La Virginite, double bluish white 



Crown Prince of Sweden, double dark blue . 



