INDEX 



305 



Under epidermis of trailing arbutus, 

 264 



hypodermis of klip buchu leaf, 

 262 



palisade parenchyma of klip 

 buchu leaf, 262 

 Unicellular clustered hairs, 72 



clustered hairs, illustrations, 71 

 non-glandular hairs, 69 

 solitary branched hairs, 72 

 solitary hairs, illustrations, 70 

 Upper palisade parenchyma of klip 

 buchu leaf, 260 

 palisade parenchyma of moun- 

 tain laurel, 264 

 Vacuoles, 53 



Vascular bundles, arrangement of, 

 292 



occurrence of, 292 

 Vessels, annular, 127 



and tracheids, introduction, 126 

 in cross-section of quassia wood, 

 254 



in radial-section of quassia wood, 

 254 



in tangential-section of quassia 



wood, 258 

 of ruellia rhizome, 226 

 of ruellia root, 223 

 of ruellia stem, 237 

 of spigelia rhizome, 226 

 pitted, 131 



pitted with bordered pores, 131 

 reticulate, 131 

 sclariform, 128 

 spiral, 127 



Water pores, aerating function of, 151 

 Watchmaker's loupe, 4 



illustration, 4 

 Wood fibres, color of, 104 



illustrations, 105 



in cross-section of quassia wood, 



254 . 



in radial-section of quassia wood, 



in tangential-section of quassia 



wood, 258 

 introduction, 104 

 structure of, 104 

 Wood parenchyma, conduction by, 

 150 



in cross-section of quassia wood, 

 254 . 



in radial-section of quassia wood, 

 258 



of pink root, 221 



of ruellia rhizome, 227 



of ruellia root, 223 



of ruellia stem, 237 



of spigelia rhizome, 226 



of spigelia stem, 235 

 Woods, description of, 254 



diagnostic structures of, 258 

 Woody stems, buchu stem, descrip- 

 tion of, 242 



mature buchu stem, 242 

 Xylem, of pink root, 221 



of ruellia rhizome, 226 



of ruellia root, 223 



of ruellia stem, 237 



of spigelia rhizome, 226 



of spigelia stem, 235 



