27 
CONFERENCE NOTES. 
The January conference of the scientific staff and registered 
students of the New York Botanical Garden was held in the 
laboratory of the Museum Building, Monday, January 15, at 
4P.M. 
A general synopsis of the work on the mosses for the first part 
of Vol. 15 of North American Flora, was presented as follows: 
I. Sphagnaceae, Dr. A. Le Roy Andrews........... 100 species reduced to 37 
2, Andreaeaceae, Miss Julia T. Emerson............ 12 species reduced to II 
3. Archidiaceae, Mrs. N. L. Britton............... 8 species reduced to 4 
4. Dicranaceae, Mrs. Britton and R. S. Williams: 
1. Bruchiaeae, Mrs. N PittOMeeis eae Gees 22 species reduced to 20 
2. Ditricheae, Mrs. N. L. Britton.............. Io species enlarged to 25 
3 yoxiphieae, Mrs. N. L. Britton........... I species enlarged to 2 
Seligerieae, Mrs PUCCON 6 S305: 485s hes vie 6 species enlarged to 9 
5. Dicranelleae, R. S. Williams............ 55 species reduc: 29 
doweisieae, Mr. R. S. Williams. ........ 2species....... 2 
. Dicraneae, Mr. R. S. Williams.............. 230 species reduced to 117 
5. Leucobryaceae, Mr. R. S. Williams: 
€Uuco. fae Eerie ness lad ool de! Na iotates tea ecan as 26 species reduced to 
2. Leucophanes.... 0... ce ccc cece nee i ah Gehan 3 species reduced to 2 
3. Ree iiiee Radeee ea ieee Dh eta nach eva Se ay 5 species reduced to 3 
Dr. A. Le Roy Andrews, of Cornell University, stated that the 
number of species of Sphagnum recorded for North America had 
been increased from Ig listed by Lindberg in 1882 to 100 in Warn- 
storf’s treatment in Pflanzenreich, just issued. After critical 
studies and comparisons with W. I., C. and S. A. forms, he had 
been able to reduce this number to 37 species and 8 varieties. 
He also stated that ‘‘ With reference to nomenclature, where the 
facts seemed clear he has followed the principle of priority starting 
with Linnaeus, involving the adoption of 6 old names only, and 
no new changes are made.” 
Miss Julia T. Emerson followed with notes on Andreaea in 
which she stated that 4 species of this genus had been recorded 
by Lesquereux and James in 1884. This number had been 
increased to 12 since, which she had been able to reduce to 10 
and added one new species from Toccoa Falls, collected by 
Dr. Small. 
Mrs. Britton stated that in the genus Archidium the species 
