INTRODUCTION. 



Fig. 4. 



not bearing those lateral appendages, the Boot ; and the 

 green flat lateral members or appendages on the stem, 

 Leaves. Moreover small slender protuberances will be 

 found on the surface of every part ; these are called Hairs 

 or Trichomes. 



As seen in the preceding observations, most higher plants 



consist of four parts, name- 

 ly, Boots, Stems, Leaves, and 

 Hairs; but such lower plants 

 as the Zenigoke (Marchantia 

 polymorpha) (Fig. 3), Matsudake 

 (Armillaria edodes) (Fig. 4), 

 Kombu (Laminaria japonica) 

 (Fig. 146), etc., do not present 

 any differentiation into root, 

 stem, and leaf, and the body of 

 these plants is called a Thallus. 



All the parts of the plant-body 

 are represented in the following 

 table. 



Fig. 4. — Matsudake 

 (Armillaria edodes). 



Plant-body 



With differentiation . 



Root. 

 Stem. 

 Leaf. 

 Hair. 



■Witfiout differentiation Thallus. 



