54 
spores. As the result of experiment, Dr. P. Voglino lias found 
that the summer conidia-bearing form of the Strawberry fungus 
(Ramularia ) may give rise to a pyenidial form ( Ascochyta ), suc¬ 
ceeded by the complete form, Sphaerella. There is a striking 
resemblance between the two cases, and a comparison might be 
made thus :— 
Strawberry Leaf Blight. 
1. Ramularia tulasnei Sacc.—Conidial stage. 
2. Ascochyta fragariae Sacc.—Pyenidial stage. 
3. Sphaerella fragariae (Sacc.)—Ascoinycetal stage. 
Lemon Bark Blotch . 
1. Fusarium incarnatum (Desm.). 
2. Ascochyta eorticola. 
3. Gibberelia pulicaris (Fr.). 
So that in all probability the different fungi aro merely stages in 
the life of one form, and the nature of the season, combined with- 
the condition of the tree, will determine the particular stage which 
will prevail. 
The tree in question bore a very heavy crop before dying right 
out, and the bark near the surface of the ground was ruptured 
and partially destroyed, not unlike the effects of (i Collar rot ” 
(Plate X.). The disease is evidently spreading, as this grower 
writes under date 11th April, 1899:—“ I am sorry to say I have 
two more trees dying off with the same complaint. The leaves 
in some cases are dropping off, the others are drying up. The 
branches have a dark look, as if affected badly with scale. 
Ihe bark is going at the graft. All the Lemon trees had night- 
soil trenched around them when they were planted ; since then 
they have had mulching of stable manure.” 
Treatment. —As is the case with so many diseases of the bark 
of Citrus trees, if the affected portion is completely removed in the 
early stages of the trouble the wound soon heals, and health is 
restored. By this means the present disease was overcome when 
taken in time, but if allowed to go too far, the tree is practically 
ring-barked, and death ensues. Similar treatment to that of 
“ Collar rot” may be recommended. 
Although the disease has only been recorded from a few dis¬ 
tricts, it may, nevertheless, be more widely distributed. It has 
been confounded by some growers with collar rot, and the results 
are practically the same, but without the copious gumming as in 
that disease. 
