174 
Journal of Mycology 
[Vol. 11 
Leptothyrium pomi Sacc. and Spilocaea pomi Fr. were met with 
only in Southern Russia, and that not abundantly. Phyllosticta 
briardi Sacc. was abundant in Central and Northern Russia, in 
Crimea and in Caucasus along the Black Sea. Sphaerotheca mali 
Burr., on the contrary, was confined to one locality in the last 
mentioned region. Sphaeropsis malorum Peck, the cause of black 
rot of the fruit and canker of the limbs was reported in 1903 
from that same region in Caucasus, from Kharkor government 
in Russia and from Samarkand Province in Turkestan. Crown- 
gall, ascribed by the author to Dendrophagus globosus Toumev, 
was reported only from St. Petersburg government although 
occurring in many parts of Russia the preceding year. Hydnum 
schiedermayeri Heufler has proved destructive in only one local¬ 
ity at Simbirsk. 
Pear . Rust, Gyrnno sporangium sabinae W., is confined to 
those regions where the teleutospore host, Juniperus sabina L. 
grows, i. e., to Southern Russia where it is very abundant. In 
Poltava government not only the leaves but also the twigs were 
attacked. Septoria piricola Desm. is widespread in Russia, being 
injurious especially to nursery trees. In 1903 it was most 
abundant in those governments along the Black Sea. Scab, 
Fusicladium pirimtm Fuck., ordinarily widespread in Russia, was 
found in abundance in 1903 only in points in Caucasus and in 
Crimea and vicinity. In much the same region, but spreading 
further North Monilia fructigena Pers. was destructive. In Pol¬ 
tava government Stigmatea mespili Sor. was injurious to the 
foliage of both cultivated and wild pear trees. 
Quince. Monilia fructigena Pers., Sclerotinia cydoniae 
Schell., and Podosphaera oxyacanthae DB. occurred in 1903 only 
in limited areas, respectively Transcaucasus, the vicinity of Kiev, 
where the trouble was very destructive, and on the southern 
coast of Crimea. 
Plum. Leaf spot due principally to Phyllosticta prunicola 
Sacc., but also to Cercospora circumcissa and Sphaerella bel- 
lona, occurred in Northwestern and Central Russia and along 
the Black Sea in Caucasus. In Kursk government all the trees 
were completely defoliated in August, and even the fruits were 
attacked. Poly stigma rubrum Tul. caused considerable injury 
to foliage in the Southern governments as well as in Simbirsk 
government. Rust, Puccinia pruni-spinosae Pers., was seriously 
injurious only in Smolensk and Kursk governments, while Mo¬ 
nilia cinerea Bon. was of importance in Smolensk and and Vo- 
roneh governments only. Plum pockets, Exoascus pruni Fuck., 
caused considerable loss in Lifland, Mogileff and Kursk govern¬ 
ments, the loss in the last two being one-third and over one- 
third, respectively, of the fruits. The disease first appeared de¬ 
structively in Kursk government in 1900 and each succeeding 
year has increased in severity. 
