Sarracenias with that of Their Parents 13 



Stomata are frequent on this surface. In these three forms 

 they are of the same size, .035X.030 mm. In number they 

 are noteworthy, 5. flava having seven to a field, S. purpurea 

 three, and the hybrid shows an intermediate number — five. 



Glands are numerous over this, the alluring, surface. In 

 5. flava there are 3-4 glands per field, in 5. purpurea 2-3. The 

 hybrid averages less than three. 



This region is beset with more or less numerous long, stiff 

 hairs, directed downward. These prevent the insects from 

 pursuing any path other than that to the treacherously smooth 

 conducting surface. The hairs are thickened in parallel ridges, 

 varying in number according to the species. 



In 5. flava (PI. IV, fig. 16) the hairs seem to be remarkably 

 uniform in length. Measurements show that over 50% are 

 .22 mm. long, while the remainder are .11 or .3 mm. in length. 

 They are very numerous — 10-11 to an average field. 



5. purpurea (PI. IV, fig. 15) has hairs many times longer 

 than in S. flava. Besides these, there are shorter hairs, but none 

 as short as the longest hairs of S. flava. They vary — about 

 50% are 1.3 mm. long, 20% are .0-.9 mm. in length, and the 

 remainder are 1.8 mm. long or measure .9-1.0 mm. They are 

 quite scattered, one hair base appearing in two fields. 



5. Catesbaei (PI. IV, fig. 17) has a variety of hairs, as has S. 

 Purpurea. Some are short, resembling those of 5. flava, .2 m. 

 long, while others approach the 5. purpurea type — 1 mm. long. 

 Over 50% are less than .4 mm. in length; 20% are .5-6 mm. 

 long; the rest measure fom .7 to 1 mm. Hairs of the length of 

 both parents are represented, since the shorter hairs of S. pur- 

 purea are .9-1 mm. in length, but by far the larger number of 

 hairs are closer to the S. flava type. There are but two hairs per 

 field. 



The lower part of the tube, representing the conducting 

 surfaces in S. flava and S. Catesbaei, and the glandular surface 

 of 5. purpurea, has an exterior epidermis of cells of the same 

 character as those of the exterior of the lid. Hairs of the same 

 character are present, but more infrequent than on the lid. 

 These hairs point upwards, generally, toward the pitcher mouth, 

 and become more numerous on the upper portion of the tube. 



Stomata are very numerous over this surface. In S. flava 

 and S. purpurea there are 14-15 stomata to a field; in the hybrid 



