Bui. 1082, U. S. Dept. of Agriculture. 





PLATE VII. 



/v^.V 







Growth Conditions and Fire-Disease of Tulip Bulbs. 



^^'^' ^■T'P^^'™^ tiilip clump of bulbs with improperly filled coats due to bad cultural 

 coiiditions. Fig. 2.— A dwarfed seed pod of single late tulip rctroflexa, showing the 

 restmg stage (sclerotia) of the fire-disease fungus (Botrytis). Fig. 3.— Single early 

 tiUips m vertical section, showing (above) the absence of flower indications in July 

 When the bulbs were dug and (below) the well-developed flower later in the season. 



