195 
conidiophores bear spores which are precisely simi 
s precisely similar to those 
formed on the leaves, namely, hyaline, D celled, and oval to ellip- 
tic in shape. In size they vary a good deal, being 17- 
long by 5-6 ». They are somewhat constricted at the septum, 
y ti 
mycelium. The fungus produces spores in profusion in these 
spaces, the conidiophores in many cases lining both sides of the 
spaces, and thick mycelial cushions may even occasionally be 
developed. When the spores mature, they are apparently 
liberated into the central cavity. : 
In the case of rusts, internal sori are not uncommon, and have 
been found in Uromyces carygphyllinus, U, cala ‘i, Puccinia 
graminis, P. glumarum, and others. Cronartiwm ribicola 
In German 
produce perithecia in 
ascospores in spring ( 
38.342: Wallace, Cornell University Bulletin No. 335. 
young wood which remaine ; 
‘duced and liberated spores (Gard. Chron., July 14, 1906, p. Hae 
ourn. S gric. Coll., Wye, 1907, p. 291). The cushions pro- 
duced by Actinonema rosae are precisely comparable to those of 
Fusicladium, and function in the same manner. It should how- 
mens of apple and pear twigs bearing ; C 
e of the Atlantic States (Maine Agric. Expt. St. 
4; No. 252, 1916; Phytopathology, vol. 
iii, p. 265, 1918). 
Varieties Attacked.—The season was well advanced (April) 
when the infection on the young wood of Juliet was first observed, 
had already been pruned and 
i 
paid to the Royal Horticultural Society's s at y 
where, thanks to the kind help afforded by the Superintendent, 
a2 
