62 
The two conclusions which are of primary importance in 
connexion with the fungus are (1) that species of Picea, Abies and 
Larix appear to be immune to the disease, and (2) that it is only 
possible to infect species of Pinus at a broken or wounded surface. 
The disease has been most commonly met with in the nursery, 
and it is here that measures should be taken to stop its spread. 
The removal and destruction of diseased parts should be carefully 
attended to. In the forest direct methods of treatment are scarcely 
practicable. In districts where the disease is known to occur it 
is advisable to avoid cultivating large areas with species of Prnus ; 
the disease would be more easily kept under control by practising 
a mixed cultivation. It should be borne in mind that a close 
aggregation of large numbers of plants of the same kind favours the 
development and spread of an epidemic. 
In connexion with the mode of entrance of the fungus Massee 
has mentioned in his publications, and I have also observed, that on 
the samples of diseased material received at Kew infection could 
be traced to small wounds on the bark. Such wounds are probably 
made by insects, and it is important that this point should be 
investigated. If these wounds can be traced to one or two species 
of insect in a district, it might be advisable that an attempt should 
be made to exterminate the insects. 
In the above it has been only possible to indicate certain lines of 
investigation of the disease and of its method of treatment ; further 
work has had to be postponed until some future period. 
The fungus was originally described from France, and has since 
been recorded from Belgium, Italy and Finland, on dead needles of 
Pinus sylvestris and Pinus montana. ther species of Diplodia 
which occur on pines and are closely related to Diplodia pinea are 
D. acicola, Sacc., D. conigena, Desm., D. sapinea, Fries, the 
difference between these species being in the relative sizes of the 
spores. The following is a diagnosis of Diplodia pinea :— 
erithecia globose, erumpent; spores oblong, 35-40 x 16-18 pn, 
stalked, at first continuous and yellowish, becoming later one-septate 
and fuliginous, not constricted at the septum. 
Kickx.—Fl. Flandr. I, p. 397. 
Massee.—Diseases of cultivated Plants and Trees, 1910, p. 574. 
IIIL—SOME ADDITIONS TO THE LEGUMINOUS 
GENUS FORDIA. 
S. T. Dunn. 
name Fordia was given in his honour and the species was described 
under the name of F. cauliflora. As Hemsley pointed out, the tree 
