REFERENCES 121 



4. Prepare enlarged drawings of the periderm of the stem of 

 Pelaryoniuin. Tilia or Smnbucu!^ showing the arrangement and 

 structure of the ceils of tlie phellem, phellogen and phelloderm. 

 Examine macerated bottle-corlv (i.e. the phellem of the cork oak, 

 Quercus siiber) and sketch several of the individual cells. 



5. Draw in detail the resin canals as seen in trans-sections of 

 the stem of Pitius. 



6. Show, by a diagram, the arrangement of the vascular 

 bundles as seen in the trans-section of the corn stem. Draw in 

 detail a: single vascular bundle showing the fibrous bundle-sheath 

 and the structure of the primary phloem and primary xylem. 



7. Prepare diagrams of the trans-sections of the stem of 

 Aristolochia. These diagrams should illustrate the effects of 

 secondary growth on the primary structure of the stem. 



8. Examine the demonstrations of various types of nodal 

 anatomy and prepare diagrams to illustrate them. 



9. Outline the processes of mitosis and cytokinesis as they 

 occur in the fusiform initials of the cambium in gymnosperms 

 (cf. Bailey 1920 and 1928). 



10. Outline the methods of secondary growth in the stem of 

 woody monocotyledons (cf. Chamberlain 1921 and Cheadle 1937). 



REFERENCES 



1. Arber, A., The Interpretation of Leaf and Pioot in the Augio- 

 sperms. Biol. Rev. 16 :81-105. 1941. 



2. Bailey, T. W., The Cambium and Its Derivative Tissues, III. 

 A reconiuiissance of evtological phenomena in the cambium. 

 Amer. -lour. Bot. 7:417-434. 1920. 



3. , , The cambium and Its Derivative Tissues, 



IV. The increase in girth of the cambium. Ibid. 10:499- 

 509. 1923. 



4. Barthelmess, A. TIeber den Zusammenhang zwischen Blatts- 

 tellung und Stelenbau unter besonderer Beriichsichtigung 

 der Konifereu. Bot. Archiv. 37 :207-260. 1935. 



5. Boke, N. II., Histogenesis and Morphology of the Phyllode in 

 Certain Species of Acacia. Amer. Jour. Bot. 27 :73-90. 1940. 



6. Boke, N. II. Zonation in the shoot apices of Trichocereus 

 spachianm and Opuntia cyUndrica. Amer. Jour. Bot. 28 :656- 

 664. 1941. 



