91 
spines being intermixed with the conidiophores. Numer 
species belonging to these genera are known a ei 
parasites, attacking more especially leaves and frui 
The leaves of the tea plant are er le in the first 
instance by fisting spores settling on their upper surface when 
p. 
range of mycelium in the tissues. Eventually the SESA porin 
of the p changes to a dull grey Bee nd becomes studded 
with nu us very minute black spots, which are HORS ed 
in een circles. These correspond to the clusters of 
spores which rupture the epidermis of the leaf and become free 
it 
adhere to such floating fragments, it is not difficult to understand 
why the disease spreads so quickly when once established in a 
plantation. 
As the species proves to be undescribed, the following diagnosis 
is given :— 
ee ze Massee (sp. nov.) Macule amphigene 
effuso -indeterminate, ee avo - brunnez, dein nigrescentes, 
denique erum arescentes, postremo frustulatim  decidusz ac 
folium perforatum relinquentes. Acervuli centro macule laxe 
insidentes, e ee li. Conidia cylindraceo- elongata, continua, 
utrinque obtu wi tren episporio levi donata, 15-17 x 4-5 p. 
Cystidia Veterem t ta, septata, olivacea, 100-135 x 7-8 u. 
CEYLON. Central Province. On living leaves of Camellia Thea. 
Preventive measures. Bordeaux mixture has been proved t 
arrest the spread of disease caused by other en = Polietotri- 
chum, as C. lindemuthianum on scarlet-runners French 
beans, C. Althea, on reger &c., and would BaS prove 
nn in the present instance. Care should be taken to experi- 
ment at firs A a very dilute solution until its action on the 
leaves is aco 
Diseased leaves shui be picked before the spores are mature ; 
that is, as soon as the first indications of the presence of the 
fungus are weno d. If this practice was universally followed 
vite the infected area, the disease could be readily exter- 
minated. 
CENTRAL AMERICAN COFFEE-DISEASE, : 
This disease has attracted attention for rather more than the 
last t twenty years But it is, perhaps, only of late that it has 
attained serious dimension ns. Apparently, the first notice is con- 
tained in the Kew Report for 1876 (p. 21), where it is noticed as 
* Mancha de hierro" or * Iron stain." Berkeley attributed it to a 
minute fungus, Depazea maculosa, which was the only organism 
he could find on the diseased leaves. Dr. Ernst, however, in his 
Estudios sobre pe : deformaciones, Enfermededas y enemigos del 
arbol de Cafe en Venezuela, Saraci, 1878, was unable to accept 
uus as the cause of the mala 
“ Berkeley (ns que la De paved es causa de la ‘Mancha de 
hierro, sin duda porque las hojas que le fueron ieee us 
* 
