28 



BUDS 



growing point ; a mode of protection quite perfectly 

 represented, also, hj the Castor Bean plant (Fig. 16). 

 In the JMuUeiu, protection is assured both in the growing 



14. End f)f the stem, and two nas- 

 cent leaves, in Coleiis, after 

 removal of several pairs of 

 the leaves of the growing 15. Protection of the growing bud of 

 tud. Begotiia. 



season and in winter by a. thick, ■woolly covering of plant 

 hairs, or tricJiomes. These are produced by all the leaves 

 in their earliest stages when cro■\^"ded together in the bud, 



10. Protection of the terminal bud in the Castor Bean. 



and persist when the leaves are mature. The tender 

 sprouts of many plants are well supplied with trichomes 

 of a special Icind. secreting distasteful liquids which dis- 

 couragre the attacks of herbivorous insects. 



