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part or all of the leaf. On leafstalks and tendrils as elongated dark 
lines, which increase in breadth so as to involve the part and 
cause it to turn black and shrivel. Similar elongated spots, 
which afterwards become white in the center, mark its stems, 
but in the case of these woody growths, the damage I have not 
found sufficient in the specimens examined to be serious, the in- 
jury being mostly confined to the tenderer parts of the vine. 
The spores of the fungus, which germinated readily, were 
sown upon a young watermelon plant, grown from seed in the 
greenhouse; in three days the plant thus affected began to show 
signs of disease ; in eighteen days the plant was completely dead. 
An examination of the blackened and wilted leaves showed the 
pycnidia of the fungus containing the characteristic and well de- 
veloped sporules. 
The check plant uninfected remained healthy, with no signs of 
the disease. . 
The fungus causing the above trouble isa member of the 
genus Phyllosticta, although from the character of the sporules, 
which are sometimes uniseptate and hyaline, it is questionable 
whether it might not, following Saccardo, be classed as an Asco- 
chyta. Wtseems to differ from either P. orbicularis, E. and E., 
or P. curbitracearum, Sacc., found on Cucurbita Pepo, L., and is 
here described as new. 
Phyllosticta Citrullina, n. sp. 
Spots circulur, irregular, black, concentrically ridged, becoming 
confluent. Pycnidia amphigenous, brown, immersed, scarcely 
erumpent, membranaceous, lenticular 75-131 pu, average of many 
measurements 107 #& X 67 #.. Sporules 9-10.7 M, average about 
10 « X 3.5 # generally continuous, sometimes uniseptate, straight, 
slightly curved, ends obtuse, often biguttulate, hyaline. 
On leaves and other parts of watermelon. 
~ Delaware College, Newark, Del., Oct. 27, 1891. 
Botanical Notes, 
An extraordinary case of fasctation has just been brought me 
in a specimen of Rudbeckia hirta from Warwick, R. I. The 
plant is about eighteen inches high; the flattened stem, covered 
with numerous, well-formed leaves, is at its narrowest part over 
