103 
in close proximity. While the repeating stage is wanting in the 
known species of this genus, it is possible that it ate have existed 
in the past. Its absence may be partially comp ted by the 
long peridia of the aecial stage and the pro eportionatel large 
number of spores produced. The telial stage of Gymnosporany 
gium, unlike that of other rusts is not a resting ne but the 
spores germinate as soon as matured. The life cycles of these 
rusts were outlined carefully and compared aa so far as possible, 
homologized with those of other groups of p 
Much attention was given to the question Fie onan « 
of the species of the genus which would depend largely upon 
distribution of the hosts on which the rusts occur. The rusts 
of this genus would not be able to exist except where the distribu- 
tion of the two hosts required to complete their life cycles overlap. 
A study of the genus has revealed forty species for the world, 
thirty-one of which are found in North America. Three are 
common to America and Europe and several are found exclu- 
sively in India and Japan. The entire paper will be published 
in the BULLETIN of the Garden. 
Dr. W. A. Murrill spoke on the mounting of fleshy fungi in 
the herbarium and exhibited a number of devices recently intro- 
duced for this purpose in the Garden herbarium. The difficulty 
of mounting agarics for the herbarium in anh a way as to 
prevent them from being crushed, while economizing space and 
maintaining a single series, is recognized by every mycological 
curator. In many herbaria, it is still the practise to press all 
specimens flat and glue them to the sheet or enclose them in 
packets; in others, a. sata box collection is kept for the 
larger specimens, and, when a specimen is wanted, there is much 
confusion and noise ae it is found and finally returned to 
its proper place in the sequence. At the New York Botanical 
Garden, several devices have been tried with more or less success, 
the chief objects being to preserve the specimens and to arrange 
them, with all notes and drawings, in one series. 
or large specimens, boxes of different sizes are used, and 
these are placed in light trays made of tulip wood, or glued to 
cardboard cut to fit the’ pigeonholes of the herbarium cases. 
