Sarracenias with that of Their Parents 23 



two stomata were found in a hundred fields. The number here 

 is perhaps not to be taken as an average; but one may con- 

 fidently assert that there are fewer stomata present in the hybrid 

 than in S. Drummondii, although they may or may not be 

 intermediate in number. 



The hairs of the detentive surface are about as numerous 

 in 5. Drummondii as in S. flava, 5-6 per field. In S. Moorei 

 the hairs are more numerous — 7-8 per field. In length, as 

 before, the hybrid is intermediate: 5. flava .37 mm. long, S. 

 Drummondii .54 mm., 5. Moorei .45 mm. The epidermal 

 cells from which they spring are straight walled cells, char- 

 acteristic of detentive surfaces. 



Outer Epidermis of the Pitchers 



The epidermal cells of the outer surface of the pitcher tube 

 are swollen as on the upper lid portion; excepting over the 

 region of the veins, where straight walled, much thickened cells 

 take their place. Stomata are very numerous, 10 or more to a 

 field; glands are infrequent, one to a field; and hairs are absent. 

 In S. Moorei the epidermal cells are slightly swollen; the stomata 

 are more numerous than in 5. Drummondii, 12 per field; glands 

 are 1-2 per field; no hairs are present, as in 5. Drummondii. 



T. S. Tube at Base of Pitcher 



The cells of the outer epidermis of 5. Drummondii are so 

 swollen that the stomata appear sunken, instead of raised 

 above the epidermal level as in S. flava. There are here but 

 three layers of false palisade. The mesophyl is deeper and 

 looser than in 5. flava with peculiar bands of cells rich in con- 

 tents forming a complete ring about the pitcher tube. There 

 are two layers of sub-detentive cells, with tannin present. 



The tube sections of 5. Moorei resemble those of S. Drum- 

 mondii closely because of the presence here also of the peculiar 

 bands of parenchyma cells in the mesophyl region. There are 

 two layers of reversed palisade, and two rows of subdetentive 

 cells with peculiar aggregated contents, noted above in 6 1 . flava. 



The "ridges" above the veins are more pronounced in 5. 

 Drummondii than in S. flava. S. Moorei shows an intermediate 

 amount of thickening in this region. 



