ls i i 
- SEOTION OF VEGETABLE PATHOLOGY. 351 
(1869). It is a well-known malady both in France and Germany, but 
is not serious enough to call forth much. notice in the agricultural 
journals. This is probably due to the fact that it occurs only in iso- 
~ lated places and is easily controlled; for it attacks both the sugar 
t 
and fodder beets, and the diseased leaves soon turn yellow or brown* 
and are not even good for fodder. It is supposed that it somewhat 
diminishes the amount of sugar produced in the countries where it 
exists; and a French scientific work+ of 1878 states that it had been 
on the increase for several years. 
(b) THE DISEASE IN CALIFORNIA.t 
In September, 1887, at Orange, in the southern part of California, 
the leaves of the cultivated Beet were found attacked by this Beet rust. 
The infested leaves were thickly dotted with powdery, round or oval, 
raised, reddish-brown spots, surrounded by a white rim formed of 
the ruptured epidermis, and varying in size from mere points, scarcely 
visible to the naked eye, to spots slightly over a millimeter in diam- 
eter. They were irregularly distributed over both surfaces of the 
leaf, sometimes occurring exactly opposite each other. Some of the 
spots were surrounded by a small area of dead tissue. 
Dr. Byron D. Halsted § states that he found this rust at Santa Bar- 
bara, where it ‘“‘was making much trouble for the market gardeners. 
In some places every leaf of the plant was badly infested and whole 
rows of beets were dwarfed and discolored by the parasite. The pest 
was found in its worst form on the escaped plants which in some 
places almost cover the moist low ground.” 
(c) MICROSCOPICAL GHARACTERS OF THE FUNGUS OF BEET RUST. 
{Jubainville et Vesque. 
tIts presence in California is noted ‘by Rey. J. E, Vize, in Grevillea, Vol. V, 
(187677), p. 110. 
§ Bulletin from the botanical department of the Iowa State Agricultural College, 
1888, p. 115. 
