iv.] 



GARDEN PEA. 



mous ; pistil superior (that is as to the ovary), syncarpous 

 that is, with carpels coherin g). 



4. GARDEN PEA. The calyx presents a new feature. 

 It is in one piece. But it is five-toothed, and the teeth 

 indicate the number of sepals which compose the calyx. 

 The calyx is gamosepalous ; that is, composed of coherent 

 sepals. The corolla consists of five free unequal petals ; 

 it is therefore polypetalous and irregular. 



The stamens are not inserted strictly upon the floral 

 receptacle, but, owing to a slight adhesion contracted with 



FIG. 13 Section of flower of 

 Garden Pea. 



FIG. 14. Diadelphous 

 stamens of same. 



the bottom of the calyx, they spring from the lower part 

 of the latter, as a section made through the middle of the 

 flower with a sharp knife from below upwards will show. 

 The stamens are hence called perigynoits. Count them 

 carefully. You will find there are ten of them (decan- 

 drous], nine coherent by their filaments into a bundle, 

 one (the upper one) distinct. Cohering thus, in two 

 bundles or sets, they are called diadeJphous. 



The pistil is free from the calyx, and consists of a single 

 carpel, as you may determine from the undivided stigma 

 and one-celled cavity of the ovary. It is superior and 



