44 
The disease known as “ Die-back ” or a Exanthema 91 is not 
known to occur outside of Florida, but to prevent mistakes being 
made a few of the more characteristic symptoms may bo 
given— 
1. The ends of the very rapidly growing shoots turn yellowish 
before maturing, and finally become stained reddish-brown in 
patches or throughout. This appearance is caused by a deposit in 
the outer cells of a reddish-brown resin-like substauco. This 
yellowiug and staining of the twigs, which is very general on the 
new growth all over the treo, is followed by the dying back of 
the affected twigs for a short distance, usually 3 to 6 inches, 
2. Eruptions caused by the bursting of the bark very com¬ 
monly occur on new and old twigs. 
3. The foliage of diseased trees is always a very dark green ; 
indeed this colour, so much desired by some growers, indicates 
that the grove is on the verge of showing the discaso. 
