GERMINATION OF BEANS 



327 



398a. Monoootyledonous plants are less numerous, as to kinds, 

 than the dicotyledons. Here belong all the palms, lilies, grasses 

 and cereal grains, rushes, sedges, orchids, cannas, bananas, arums 

 and duokmeats. Most bulbous plants are monocotyledons. Some 

 of these plants are illustrated in Pigs. 39, 40, 41, 58, 74, 101, 102, 

 119, 138, 142, 148, 165, 166, 167, 168, 183, 184, 188, 189, 196, 199, 

 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 

 254, 281. 



LXIII. GERMINATION OP BEANS 



399. Plant a few common beans and watch the 

 germination. The plantlets back out of the soil 



much as the squash 

 Li'^'fn'^^;?. does, and the coty- 

 ledons, a, Fig. 348, 

 are elevated into the 

 air. These cotyledons 

 remain practically the 

 same size as they were 

 in the seed, however, 

 and do not become 

 conspicously green 

 and leaf- like. 



400. At the same 

 time, plant seeds of 

 the Scarlet Runner or 

 White Dutch Runner bean. The first foliar parts 

 to appear are true leaves (Fig. 349), and if the 



■Fig. 348. 



Germination of 

 common bean. 



Fig. 349. 



Germination of 

 Scarlet Runner bean. 



