Sarracenias with that of Their Parents 17 



the region where the blended detentive-glandular cells are most 

 numerous. 



Fourth, normal glandular cells of S. purpurea. These cells 

 are reproduced in patches, isolated, in the region of the detentive- 

 glandular cells. 



Fifth, normal detentive epidermal cells with or without hair 

 processes, intermediate between the types of 5\ flava and 5. 

 purpurea. 



Sixth, normal glands; two per field. These occur down to the 

 purely detentive zone, where they cease. 



A similar case, such as above, is presented in a hybrid be- 

 tween S. minor, without a glandular area, and S. purpurea, 

 and has been discussed shortly by Macfarlane (28). He con- 

 siders that this region represents a modification of the upper 

 detentive surface. In both hybrids it seems to be shown that 

 the conducting-surface cells of one parent are incapable of 

 blending with glandular surface cells of S. purpurea, since no 

 wavy-walled cell with a prolongation characteristic of the con- 

 ducting surface type ever appears. In other words, this rep- 

 resents a clear case of the so-called bi-sexual hybrid (29), or 

 of particulate inheritance (38). 



The detentive surface presents no such confused condition, 

 rather a perfect blending, cell for cell. In this region, in these 

 forms, there are no stoma ta nor glands present. In all, the 

 epidermal cells are polygonal and contain a fair amount of 

 tannin (30). The hair cells are remarkable in relation. In 

 S. purpurea they are long — 1.5 mm. — and rather infrequent — 

 .7 to a field. Those of S. flava are quite short — .37 mm. — 

 but very numerous — 5.5 per field. In 5. Catesbaei the hairs 

 are intermediate in size and number, for they are .88 mm. long, 

 with 2.8 per field. 



Lower Pitcher Region 



T. S. of pitcher at lowest part of tube shows in all a hollow 

 cylindrical portion, representing the T. S. of the pitcher proper. 

 From the front extends the more or less wide wing, representing 

 the fused laminae (23). In the cylinder the bundles are dis- 

 posed at intervals, larger and smaller alternating, with the 

 xylem on the inner side, toward the pitcher cavity. In the 

 wing, two rows of bundles face each other, xylem opposed to 



