REVIEWS. 
175 
Fig. 1. 
STRUCTURE OF THE FLOWER IN ORCHIS MASCULA. 
The small letters throughout indicate the same parts, viz. — a , anther ; r , rostellum ; 
s, stigma ; l, labellum ; n, nectary ; p, pollinium or pollen-mass ; c, caudicle 
of pollinium ; d, viscid disc of pollinium. 
A. Side view of flower, with all the petals and sepals cut off except the labellum r 
of which the near half is cut away, as well as the upper portion of the near 
side of the nectary. 
B. Front view of flower, with all the sepals and petals removed, except the 
labellum. 
C. A single pollinium or pollen-mass, showing the packets of pollen grains {p) t 
the caudicle (c), and viscid disc ( d ). 
I). Front view of the discs and caudicles of both pollinia within the rostellum, 
with its lip depressed. 
E. Section through one side of the rostellum in a direction from front to back of 
the flower, with the included disc and the caudicle of one pollinium. 
F. Packets of pollen-grains, bound together by elastic threads, which are here 
shown as stretched. 
*** For the use of these and the following illustrations we are indebted to the 
kindness of Mr. John Murray. 
