482 Saunders.—A Reversionary Character in the Stock. 
The elimination from the ground-plan of the Rhoeadales of the com¬ 
missural stigma and the false partition renders necessary a revision of 
a number of unrelated families in which the same constructions are held to 
exist, more especially the whole group included in the Ericales, some genera 
of the Malvaceae, and the Orchidaceae. Evidence in disproof of the com¬ 
missural stigma in the Orchidaceae and in support of the formula G 3 + 3 is 
given in the present account. It is proposed to treat the other families 
here cited and certain isolated genera in a later communication. 
In conclusion, I wish to express my very grateful thanks to Miss 
D. F. M. Pertz, who made the drawings of the Stock specimens and of the 
figures cited from other works ; also to Miss M. G. A. Campin, who kindly 
prepared the microscopic sections of the Stock fruits, from which Figs. 19, 
28, and 29 were drawn. 
The necessary expenses incurred in connexion with the work have been 
defrayed by a grant from the Royal Society. 
