744 
DUNCAN S. JOHNSON 
EXPLAN-ATIOM OF FIGURES 
34 Longitudinal section of flower with one staniinodium. X40. 
35 Transverse section of tip of carpels showing three styles. X 75. 
36 A lower section of the same ovary. X 75. 
37 Transverse section of another ovary with four styles. X 75. 
38-43 Series of successively lower transverse sections of an ovule and its integu- 
ments, showing the different height of the integument on different sides of the 
ovule. X 160. 
44 Longitudinal sections of flower with mature stamens and stigmas and with 
four-nucleate embryo-sac. X 35. 
45 Longitudinal section of flower, and two bracts, in which the pollen has been 
discharged from the single stamen. X 35. 
46 Longitudinal section of flower with two stamens, well-developed stigmas, 
but no ovules in the cavity of ovary. X 40. 
47 Section of another flower like last but with partially aborted styles and stig- 
mas. X 35. 
48 Section of similar flower but with no ovarian cavity and a mere spine in 
place of styles. X 40. 
49 Section of similar (but younger) flower with still more reduced styles. 
X 75. 
50 Longitudinal section of flower from male spike, with no trace of carpellary 
tissues evident. X 40. 
51 Longitudinal section of flower, from middle of male spike, in which both 
tamens and carpels are rudimentary. X 75. 
52 Longitudinal section of young ovary, with ovules showing inner integument. 
X 350. 
