GARDEN PEA. 



29 



base with the claws of the petals, they are neverthe- 

 less inserted on the receptacle (hypogynous). 



3. -The carpels are almost always united in a ring, which 



breaks up at maturity. 



4. It may be added that the leaves are furnished with 



stipules, and the juice of the plants is mucilaginous. 



CHAPTEE V. 



EXAMINATION OF COMMON PLANTS WITH PERIGYNOUS 

 STAMENS GARDEN PEA GREAT WILLOW-HERB. 



39. Garden Pea. In the flower of this plant, the 

 ealyx is constructed on the same plan as in the Mallow. 

 There are five sepals, coherent below, and spreading out 

 into distinct teeth above (Fig. 35). The calyx is there- 



Fig. 36. 



fore gamosepalous. 

 Examine next the form 

 of the corolla (Fig. 36). 

 One difference between 

 the corolla and those of 

 the previous plants will 

 strike you at once. In 

 the flowers of the latter 

 you will remember that 

 each petal was precisely 

 like its fellows in size and shape, and we therefore spoke 

 of the corolla as regular. In the Pea, on the other hand, 



Fig. 35. Flower of Garden Pea. Fig. 36. Front view of the same. 



Fig, 37. Diadelphous stamens of the same. 



Fig. 38. -The pistil. Fig. 39. The same cut through lengthwise. 



Fig. 39. 



Fig. 37. 



