On Nuclear Division in the Hymenomycetes. 
BY 
HAROLD WAGER, F.L.S., 
Lecturer on Botany in the Yorkshire College , Leeds. 
With Plates XXIV, XXV, and XXVI. 
Introduction. 
HE question of the structure and division of the nuclei in 
X the lower plants is one of considerable interest to 
histologists, and has attracted the attention of numerous 
observers in recent years. The results obtained, however, 
leave much to be desired, especially as regards the nuclei of 
the Fungi. It is a matter of importance to determine to what 
extent the process of nuclear division in these plants corre- 
sponds with the indirect division, or karyokinesis, which occurs 
in the cells of the higher plants, the complexity and regularity 
of which indicate that the nucleus plays an important part in 
the life-history of the cell. The various observations which 
have been made upon the nuclei of the Fungi up to the 
present time, with one exception, tend to show that although 
the process of division resembles in many respects that which 
takes place in the higher plants, it is very much simpler, and 
does not include some of the details which are considered by 
histologists to be of great importance in the process of nuclear 
division. 
In the present paper an attempt is made to throw light 
upon this subject, by a description of some observations which 
[Annals of Botany, Vol. VII. No. XXVIII. December, 1893.] 
