PLATE 4 
Heads and plants of Harvest Queen (Salzer’s Prizetaker), diseased and healthy. 
A. —Six poorly developed heads (left) from plants partially recovered from the 
rosette disease, and one typical healthy head at (right). 
B. —Six plants (left), all of same age, showing various degrees of recovery from the 
rosettejdisease. Healthy plant at right. 
