Campbell.—Studies on some East Indian Hepaticae . 327 
surface of the receptacle. A cross-section of the pedicel of the receptacle 
shows two furrows filled with slender rhizoids. 
The Sporophyte. 
So far as we have been able to discover, no account of the embryogeny 
Text-fig. 6. All figures refer to D. velutina. a. Archegonium containing a two-celled 
embryo, xng. b. Another section of the same embryo, x 285. c. A similar embryo. X 285. 
D. Three-celled embryo. x 285. E. Two sections of an older embryo. x 285. l is a nearly 
median section. F. An older embryo ; the cells of the sporogenous tissue have their nuclei shown, 
x 285. G. Four slightly oblique transverse sections of a young embryo. x 285. 1 is the 
basal section of the series. 
of Dumortiera has been published. The recent important work of Meyer, 1 
dealing with the embryo of the Marchantiales, does not include Dumortiera , 
nor make any references to the work of others on its embryo. 
1 Meyer, K.: A Study of the Sporophyte of the Marchantiales (Russian). Moscow, 1916. 
