Sarracenias with that of Their Parents n 



nounced as in 5. flava. The lobes are intermediate in size, 

 in position also, since they stand straight out from the side of 

 the pitcher. The margin of the lid is wavy, with looser undu- 

 lations than in S. purpurea. The lid does not overhang the 

 pitcher mouth, but is erect. 



B. Microscopic Study of the Pitchers 

 I. Methods. 



Three methods were used in preparing the epidermal sur- 

 faces described below. 



(a) Scrapings of fresh material were made, for comparison 

 with treated material to gauge possible shrinkage, or seeming 

 abnormalities. 



(b) Scrapings of material macerated in KOH. 



(c) Strips of pitcher parts were boiled in 25%~50% HN0 3 , 

 to which a pinch of KCIO3 was added. When the material 

 appeared white, or bleached, it was quickly placed in water. 

 The mesophyl and subepidermal cells could be easily brushed 

 off and both upper and lower epidermis could be mounted 

 in acetic acid side by side for comparison ; sealed with asphaltum. 

 The nitric acid was not used in such strength that cell walls 

 were affected. The delicate hair striations appear clearly in 

 the photographs (PI. IV, figs. 15 and 16) made from such slides 

 with the aid of the Edinger apparatus. 



Ordinary paraffin material, fixed in chrom-osmo-acetic or 

 weak chrom-acetic, was used for sections mentioned. 



In counts given for a "field," it will be understood, unless 

 distinctly stated otherwise, that the standard "field" is that 

 of a No. 3 Bausch and Lomb eyepiece, and a No. 4 mm. Bausch 

 and Lomb objective. 



Averages are based on 100 or more counts, and measurements 

 on 200 or more. Corresponding portions of corresponding 

 surfaces were carefully selected for comparison. 



Outer Epidermis of the Lid 



In all three forms, the outer epidermis of the lid shows cells 

 that are roughly quadrangular, with wavy walls. Normal 

 stomata are present, and simple unicellular hairs. In general 

 these hairs point upwards toward the edge of the lid. Glands, 

 similar to those of the interior pitcher area, are scattered over 

 this outer surface somewhat irregularly. 



