AN ENCYCLOPAEDIA 
OF HORTICULTURE. 5835 
Syringa—continued. 
them outside until required. Only those with plenty of 
flower-buds should be selected for forcing. The difference 
in flower and wood-buds is not always readily seen, as 
both are on the points of the shoots. Flower-buds are 
globose, and much more plump than the others, and may 
thus be distinguished. Light protecting material should 
be placed round the pots for the winter, and a few plants, 
as may be required, introduced to the forcing house at 
intervals of two or three weeks from November onwards. 
A moist temperature of 55deg. will be sufficient at first, as 
it is important that the flowers should be induced to start 
a little in advance of the leaves. When Lilacs are placed 
direct into a high temperature, growth is unduly excited, 
and the flowers often remain dormant, and eventually die 
away instead of opening. When flowering is over, the 
growths may be cut back to within 2in. of the starting 
point of the previous year. Lilacs do not answer well 
for forcing two years in succession; consequently, two 
Fig. 561. FLOWERING BRANCH OF SYRINGA CHINENSIS. 
batches should be kept, one to remain in the ground 
outside while the other is being foreed. Where expense 
is not an object, beautiful plants may be purchased 
annualfy, They are imported from the Continent in large 
quantities, both as dwarfs and standards, and are all 
variably well set with flower buds. 
Fungi. Few Fungi ever do conspicuous harm to 
Plants of this genus, and none are known to be really 
gerous to their welfare. The only ones that call for 
even a passing reference are those that grow on the 
living leaves. 
less covered with a diffused white coat of hyphe of 
um (which see for remedies). 
dark 
almost all shrubby plants, especially when growing under 
trees infested by Aphides. Well syringing the leaves 
with clean water, or with soapsuds, will remove honey- 
dew, which serves as the food of the Fungus, and will 
So clear away the Fungus itself. In the North of 
These organs are occasionally more or | 
( Other plants show a | 
coating of Fumago vagans, so widely diffused on | 
f 
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f 
f 
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| moth (see 
Syringa—continued. 
Scotland, the leaves of Lilacs often show brown patches, 
with a green, watery border. These patches are the 
work of a Fungus, discovered by Mr. A. $. Wilson, and 
named by Mr. Berkeley Ovularia Syringe (G. C., 19th 
Oct., 1881). Hyphz are pushed out through the sto- 
mata of the leaves, and each bears on the tip a pear- 
shaped spore, fixed by the broader end. Mr. W. G. 
Smith has described the sexual spores of this Fungus. 
They are formed on the decaying, fallen leaves. The 
best remedy is to gather and burn such leaves in autumn. 
The leaves of Lilacs are apt to be disfigured by dry 
spots, the work of varions Fungi, e.g., Asteroma vagans, 
Cercospora Lilacis, Phyllosticta Syringe, Septoria 
\\ ENS 
AY = 
t 
na 
FIG. 562. FLOWERING BRANCH OF SYRINGA EMODI. 
Syringe, &c. ; but it would be useless to enter into a descrip- 
tion of these so-called species, as they are only stages in 
the development of others, probably Pyrenomycetes, not 
yet ascertained; and the effects are much alike with all 
of them. A few of these have not yet been recorded 
as British. The Lilacs seem little the worse for their 
Probably, burning the fallen leaves would 
resence. | 
+4 found sufficient to prevent the disfigurement from 
spreading. 
gy PR Insect pests are not dangerous. They are 
| chiefly the larve of a few Moths; e.g., the Privet Hawk- 
dz), one or two Noctue and Geometers, 
and one of the Tineina, named Gracilaria syringella. The 
last-mentioned causes the most conspicuous damage, as it 
