416  Boewig on the Histology of Cassytha filiformis L. 
7. In the root, at the point of origin of the side rootlets. 
Rie S.. T. S.*stem: 
. Epidermis. 
. Cortex (chlorophylloid). 
. Hard bast. 
Remains of protophloem. 
. Pitted vessel. 
. Tylosis. 
. Protoxylem. 
. Phloem. 
Fig. 9. Pitted vessel, showing bordered pits in surface view and sec- 
tion. 
Fig. 10. Pitted vessel and adjacent cells, showing tyloses. 
Fig. 11. Same, showing extreme tyloses. 
Fig. 12. Stages in development of stomata. Epidermis viewed in 
section. 
ON ANUP wWDHDH 
