Peobs and Beans Contrasted 



229 



124. Young plants of pea; cotyledons hypogeal 

 (X %)• 



One of the important attributes in distinguishing 

 species in these plants is the nature of germination. 

 In the garden pea, the "pea does not come up," but 

 remains under 

 ground, while the 

 bean " comes up " ; 

 that is, the cotyle- 

 dons or seed-leaves 

 (resting in the seed) 

 remain below 

 ground, in which 

 case the germina- 

 tion is said to be hypogeal ("beneath the earth"), 

 or they are liberated and appear above ground, in which 

 case the germination is epigeal. Deep planting is safer 

 with the hypogeal seeds. The common beans are 

 epigeal, but the broad beans and multifloras, and some 

 others, are hypogeal. The distinctions between some 

 of the species of beans (Phaseolus) are very marked in 

 their method of germination and in the character of the 

 first leaves following the seed-leaves. The pictures in this 

 chapter are interesting in this connection. In Pig. 124, 

 the peas have remained in the ground,^ as also the bean 

 in Fig. 140; but in Figs, 132, 135, 143, the beans have 

 come out of the ground and cling to the stems. 



PEA 

 Peas are a partial-season crop, requiring cool climate and 

 a soil not over rich; seed is sown where the plants are to 

 stand; grow in drills; hardy and may be sown very early. 



Peas are usually sown in two rows 6 to 8 in. apart, tf 

 tall varieties are grown, one row of brush or chicken-wire 



