Sarracenias with that of Their Parents 39 



edly show a perfectly exact relation. This is upheld by the 

 fact that where a surface without glands (in 5. flava) is crossed 

 with a surface where the gland number is uniform (glandular 

 of S. purpurea) the hybrid shows an exactly intermediate num- 

 ber. In the case too where they are massed in the same regions 

 in parents and hybrids, as in S. Sledgei, S. Drummondii, and 

 S. areolata, the hybrid shows a blended relation. 



The comparison of these three hybrid plants with their parents 

 in all details of structure gives an overwhelming mass of evi- 

 dence for exact blending, which extends to the most minute 

 details. It surely points to some exact relation in molecular 

 structure of the hybrid plant, extending even to the amount 

 of thickening laid down in a cell wall, the size of the starch 

 grains, or the size of a chloroplast. 



The writer wishes to acknowledge the kindness and coopera- 

 tion of Dr. J. M. Macfarlane in the preparation of this paper. 

 Thanks also are due to Mr. W. R. Taylor, who made many 

 of the microphotographs; and, through the kindness of Mr. 

 Frank M. Jones, the writer was able to examine fresh flowers, 

 which he sent from Alabama, Mississippi, and Florida. 



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