PLATE 54 



Types of Stoma 



1. Under epidermis of short buchu (Barosma betulina, [Berg.] Bartlingand 

 Wendl., f.) showing stoma and deposits of hesperidin. 



2. Under epidermis of Alexandria senna (Cassia acutifolia, Delile) showing 

 stoma and thick-angled walled surrounding cells. 



3. Upper epidermis of eucalyptus leaf (Eucalyptus globulus, Labill.) show- 

 ing sunken stoma and slightly beaded walled surrounding cells. 



4. Under epidermis of belladonna leaf (Atropa belladonna, L.) showing 

 stoma and wavy, striated, walled epidermal cells. 



