400 



BOTANY. 



Fig. 296). These structures, which may be called carpel- 

 lary leaves, show their relationship to ordinary foliage leaves 



Fig, 2%. A pinnate, open carpellary leaf of Cycas revoluta (reduced one half). /; 

 nnaltered pinme ; gk, young ovules replacing the lower pinnae ; sk', fully developed 

 ovule. After Sachs. 



in having pinnae toward their summits (/, Fig. 296). 



The examples given will illustrate the general structure of 



locjues of the " scales " of Abies. Either interpretation would necessi- 

 tate a considerable change in the systematic arrangement of Taxtnece, 



