- 24 - ADIANTUM. 



48. Sporophyte : Internal Structure. Draw a transverse section of the stem, 

 under the low power, showing : epidermis ; adventitious roots in some sections ; 

 parenchymatous tissue with numerous starch grains ; vascular bundles, each surrounded 

 by endodermis, and made up of pericycle, phloem, and xylem, consisting of tracheids 

 and xylem parenchyma. Then draw a vascular bundle under the high power. 



49. Sporophyte : Internal Structure. Draw part of a longitudinal section of the stem 

 under the high power, showing : epidermis 1 ; parenchyma ; endodermis ; pericycle ; sieve- 

 tubes of phloem ; scalariform vessels of xylem, and xylem parenchyma. 



