CEAXBEEEY DISEASES OX THE PACIFIC COAST O 
growing. "The axillary leaf buds, which usually remain dormant, 
are attacked by the disease and produce short shoots with rather 
close, enlarged, swollen, and distorted leaves which are pink or light 
rose colored" (6). No particular control measures have been found 
necessary, although it is possible that the systematic spraying with 
Bordeaux mixture practiced within recent years may be partly respon- 
sible for its rarity. 
FALSE-BLOSSOM 
The false-blossom disease of the cranberry (7, lJf) is present to some 
extent in practically all Pacific coast bogs planted with Wisconsin 
vines and has been found on the Bennett Jumbo, Searls, and Pro- 
lific varieties. The writer has not found it on any Cape Cod or 
Xew Jersey varieties, even when the latter were planted adjacent 
to affected Wisconsin vines. The form of disease usually met with 
here is the characteristic witches'-broom growth with flowers upright 
and dark red in color, receptacle enlarged and petals dwarfed, but no 
proliferation of floral organs. Berries frequently mature on affected 
plants, though they are dwarfed in size. Careful observation disclosed 
no evidence that the disease spreads under the conditions prevailing 
on the Pacific coast. 
False-blossom is demanding a great deal of attention in eastern 
cranberry districts, and evidence is accumulating that the disease is 
infectious. The behavior of the disease en the Pacific coast is there- 
fore of unusual interest. Several newly planted bogs of the Bennett 
Jumbo variety came under the observation of the writer and an 
opportunity was thus offered to watch the development of the disease. 
By the end of the second growing season diseased plants could be 
easily located by their upright witches'-broom appearance. Such 
plants were scattered at random over the bog wherever cuttings from 
diseased plants happened to have been planted. A year or two later, 
however, when the bog had become thoroughly vined over, it was 
exceedingly difficult to locate these diseased plants. Despite the 
fact that numerous sources of infection were originally scattered 
throughout the bog, the disease evidently did not increase in abun- 
dance, but, on the contrary, actually appeared to decrease as the 
affected vines became inconspicuous in the tangle of healthy vines. 
Obviously, cuttings from such a bog will carry a certain number of 
diseased vines to new plantings; and since practically all new plant- 
ings for several years past have been made from cuttings produced 
locally, it is not surprising that the disease is so universally present 
among affected varieties. The disease is no more prevalent on the 
whole in the oldest affected bogs in the region, however, than in those 
planted very recently, a fact that would be difficult to explain if the 
disease spread actively. Under Pacific coast conditions this disease 
at present exerts no appreciable influence on the yield. 
RUST 
Xo evidence has been discovered that rust, caused by Puccinias - 
trum myrtUli (Schum.) Arth., is of economic importance. Infected 
leaves may be found here and there in numerous bogs, but never in 
abundance. Usually the only evidence of the presence of this fungus 
is the appearance of a few yellowish uredinial pastilles on the lower 
surface of a leaf. 
