ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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tive type and is nearest to the Phycomycetes. Their “asci” or 
sporangia rise from the mycelium, whereas in Ascomycetes they derive 
from Ascogenous hyphae. A. L. S. 
Analytic and Descriptive Flora of Tuberoideae in Europe and 
North Africa. — F. Bataille {Bull. Soc. My col. France , 1921, 37, 
155-207). The author begins his paper by a general account of 
Tuberaceae, their structure, occurrence, methods of determination, etc. 
The history and classification follow. A key to the genera is given and 
the descriptive key for species of each genus. There are two families, 
Tuberaceae and Elaphomycetaceae, the former with eleven genera, the 
latter with three. A. L. S. 
Observations on the Perfect Form of the Oak Oidium in Italy. — 
B. Peyronel ( Le Stazioni sperimentali agrarie italiane, 1921, 54, 5-10 ; 
see also Bull. Agric. Intell. Rome , 1921, 12, 643-4). The author has 
found ripe perithecia on oaks in the neighbourhood of Rome. He 
considers that the formation of these bodies is induced by a sudden fall 
of temperature after a time of great heat. He has determined the 
species as Microsphsera quercina. The species that appeared sporadically 
before 1907 on oaks in Portugal is to be regarded as Microsphaera Alni. 
A. L. S. 
Genus Catinella. — -Elias J. Durand {Bull. Torrey Bot. Club, 
1922, 49, 15-21). The genus Catinella was formed by Boudier to 
contain Peziza olivacea of Batsch. Durand finds an older name, 
C. nigro-olivacea , for the species which grows on rotten wood in Europe, 
Asia and America. Full description and synonymy of the plant are 
given, and a second species is included in the genus, Catinella elastica 
(Patr. and Gail.), which differs in the larger spores. A. L. S. 
Sclerotinia minor sp. n. injurious to Lettuce, Celery and other 
Crops in the United States. — I. C. Jagger ( Journ . Agric. Research, 
1920, 20, 331-2, 1 pi.). A similar fungus had been described as 
causing rot of lettuce in Massachusetts. Recently it has appeared near 
Philadelphia and in Florida. The effects produced on the host plants 
are almost identical with those caused by Sclerotinia Libertiana : a sudden 
collapse of the whole plant, which is converted into a soft watery mass. 
It has been found that the fungus attacks a large number of plants. 
A. L. S. 
Myriangium on Pecaw (Carya illinoensis). — L. E. Miles 
{Mycologia, 1922, 14, 77-80, 1 pi.). The author describes a new 
species, Myriangium tuberculans, which forms tubercles on the living 
bark of the pecaw. It is found on all varieties of the host tree. It is 
superficial and causes no real injury, but is somewhat unsightly and 
mars the appearance of the trees. The asci are formed in locules of the 
stoma and contain muriform, almost colourless spores. A. L. S. 
New or Noteworthy Rusts on Carducacese. — H. S. Jackson 
{Mycologia, 1922, 14, 104-20). The author is preparing the rust 
portion of the North American Flora, and as numbers of new species 
