The Dwarf Lima Beans. 



149 



nates. This is a peculiarity of all forms of Phaseolus multijforus^ 

 so far as I know. Fig. 21 shows the familiar germination of the 

 common bean with the seed halves appearing above ground at a. a. 

 Fig. 22 illustrates the peculiar behavior of the Barteldes in keeping 





22.— Germination of Bartelles Bus-h Lima. 



the seed halves below ground. The botanist will be curious to 

 know how the vital parts of the seed look, when they are dormant. 

 Fig. 23 shows diagrams of a seed of Barteldes (1) and Burpee Bush 

 Lima (II). The two upper diagrams show a seed split in two, so 

 that the observer is looking at the inside face of one of the coty- 

 ledons or seed halves. The embryo is seen at the left. At r is 

 shown the radicle or root portion, at e the stem portion, and at a the 

 junction of the two. At the tip of the embryo are the two little 

 bodies which are to become the first true leaves of the plantlet. 

 It will be noticed that the radicle of I. — the Barteldes — is short, 

 whilst the stem portion is long as if in readiness to elevate the 

 leaves into the air, leaving the cotyledons or seed halves below. 

 This stem portion e, therefore, is the epicotyl or that part of the 



