Florida Agricultural Experiment Station


condition may not be sufficiently severe to exert much effect
on the tree. As the trouble increases in severity, however, the
leaves attain a smaller size and, in chronic cases, they not only


 Fig. 69.-Mottle-leaf condition of orange foliage.
remain very small but are very narrow and pointed in compari-
son with healthy leaves. Portions of the tree, or even the whole
tree, may become densely branched and stunted, with the leaves
dropping prematurely and the twigs dying back from the tips.
Following this repeated dying back of the tips, multiple buds ap-
pear, as in exanthema diebackk), and a bushy or rosette type of