ADIANTUM PEDA TUM. 1 o 7 



e. The parts previously seen in the transverse sec- 

 tion. Draw. 



/. The scales. Mount a few scales from the rhizome, 

 and note 



i. Their shape and texture. 

 ii. Their structure j the shape and arrangement of 



the cells, 

 iii. Draw a scale enlarged. 



C. THE ROOTS. Notice 



1 . The shape. 



2. The mode of branching. 



3. Their /#.//<?// on the rhizome. 



4. The covering of tangled root-hairs with which some are 

 enveloped. 



5. The absence of root-hairs near the w\i\\\s\\ growing end. 



6. The brownish tip (sometimes torn off), the root-cap. 



7. Examine a tranverse section of a root, and compare 

 with that of the stem. Note the position of the fibro- 

 vascular bundle. Draw the section. 



D. THE LEAF. It may be easily distinguished into two 

 parts, the stalk, rhachis, with its branches, and the green 

 blades, pinnules. 



i. The main rhachis and its branches. Note 



a. The polished surface. 



b. The shape ; a little flattened on the anterior sur- 

 face (i.e., the one corresponding to the upper sur- 

 face of the leaf). Dried or alcoholic specimens 

 are likely to have this surface flat or concave while 

 the posterior remains convex. Note the slight 



