230 



A TEXT-BOOK OF BOTANY. 



rsg 



Fig. 125. Several torms of glandular hairs: i. In which the resinogenous layer (rsg) 

 separates in the form of small rods, as the leaves of violets (A;. Fraxinus (B). and Alnus (C). 

 21 he resmogenous layer separating in the form of vacuoles in the hairs of Salvia (D) 

 ana Hyssopus (E), observed in the dried material treated with dilute solutions of hydrated 

 cnioral. 3. A lattice-like or cellular resinogenous layer occurring in the hairs of Rhodo- 

 dendron (F) and Azalea (G).— After Tunmann. 



