70 
indicated that certain constant and striking differences in the 
the la 
microscopic structure of the cortex, used by t! te Professor 
jellman as a basis for a s ric grouping of species in this 
genus, in fact, rely characteristics of the sexual and non- 
re ct, m 
sexual phases in the life-cycle of a single species. 
In the February number of the Bulletin of the Torrey Botanical 
Club, appeared a paper written by Dr. P. A. fees n the 
“Roses of California and Nevada.’ The genus Rosa - repre- 
sented in these two states by thirty-three native or naturalized 
species. Of these thirty-one are found in California; only two 
da 
specie r ifo so in- 
ded. The paper contained the description of eleven species 
new to science. 
ugh the kindness of Mr. Walter Swingle the library has 
recently received a photostatic reprint of Observationes botanicae 
in horio Dyckensi notaiae, by Joseph Salm Reifferscheid-Dyck. 
The original work appeared in three fascicles from 1820 to 1822. 
The Japanese witch hazel (Hamamelis japonica) came into full 
Tr hi 
u 00! a is 
mostly after its leaves have fallen, and thus anticipates the 
3 e 
its leaves have unfolded 
The outbreak of the tussock moth during the past season was 
the most serious for several years, and resulted in large numbers 
of egg masses which promise a similar condition during the next 
