472 



ANGIOSPERMS 



Fig. 127. — a', Vertical section of flower oi He/leborus, showingyf. r, 

 floral receptacle ; sp, sepals ; //, petals ; st, stamens ; and cp, carpels, 

 that to the right cut longitudinally to show the megasporangia (mg. spg). 



a', transverse section of gyncecium of Helleborus passing through the 

 venter {vnt) of the six carpels, each of which has a midrib (;«; ) and 

 united edges (e) to which the megasporangia are attached. 



B^, vertical section of flower of Campanula, showing floral recep- 

 tacle (fl. r) enclosing venter of gynoecium (vnt), with megasporangia 

 {tng. spg) ; calyx (cal) ; corolla (cor) ; anthers (an) and filaments (f) of 

 stamens ; and style (sty) and stigma (stg). 



B^, transverse section of gyncecium of Campanula enclosed in floral 

 receptable (Jl. r). Letters as in a''. 



c, transverse section of gynoecium of Ribes. Letters as in a'^. 



(a^ and B^ after Le Maout and Decaisne. ) 



