228 BOTANICAL GAZETTE [SEPTEMBER 
1G. 58.—Embryo system with first division of rosette embryo showing 
in one of rosette cells, beginning of usual type of development of rosette 
embryos; June 27, 191 
Fics 1.—Views of rosettes from above, showing stages in development 
of rosette embryos; June 29-30, 1916. 
1G. 62.—Rosette embryo of Pinus echinata in oblique view, showing 
apical cell; July 23, 1914. 
Fic. 63.—Views of rosettes of 2 adjacent archegonia as seen from above, 
showing different stages in which various rosette embryos may be found at the 
same time; June 30, 1916. 
Fic. 64.—Later rosette embryos well developed, but no tubes elongated 
to form a suspensor; July 8, 1916. 
Fic. 65.—Side view of group of rosette embryos, one of which shows an 
apical cell and distinct segmentation; primary suspensor (s) of lower 4 embryos 
has entirely collapsed by the time this stage is reached; July 8, ro1 
Fic. 66.—Side view of rosette embryos from 2 aes archegonia, 
from some of which embryonal tubes have elongated to form a suspensor, 
showing that rosette-cell proliferations are real embryos. 
Fic. 67.—Group of rosette embryos which have suspensors elongated 
in various directions, although number of cells formed is less than in fig. 64, 
where no elongation has thus far occurred; July 5, 1916. 
Fic. 68.—Rosette group showing 1 exis ryo with suspensor elongating 
under difficulty and distorted, on account of heavy wall found between rosette 
and suspensor cells. 
Fic. 69.—Embryo system which was badly stunted, due to delay in 
fertilization or development, while 2 or more adjacent embryo systems 
gained supremacy; June 29, 1916. 
