LIST OF ILLUSTRATIONS xxiii 



FIG. PACE 



121. Pimis, carpel 456 



122. Zamia and Cycas, reproductive oi^ans 457 



123. Lily, section of stem 462 



124. Buttercup, structure of flower 465 



125. Transition from petal to stamen 467 



126. Angiosperms, reproduction and development 470 



127. Hel/eborns, Campanula, and Kibes, flower 472 



