INDEX 



ABIES, structure of shoot apex, 

 25 



Accessory vasoulai- bundles, in 



leaf of Si/riiiga, 126 

 Aesculus, colletei's on bud scales 



of, 54 

 Albuminous cells, of gynmo- 



sperinous pliloem, 94 

 AUiiu)!, study of epidoniiis of, 



48-49 

 Aniyloplasts, in cells of storage 



organs, 4 

 Aniline blue, stain for callus, 07, 



142 

 Anisotropic, use of term, 9 

 Annual ring, structure of, 115 

 Annular elements of protoxvlem, 



84 

 Anthocyanin pigments, in vac- 



uome of cells, 3 

 Apex (see shoot apex, root apex, 



apical meristems) 

 Ajiical cell, highly vacuolated 



character of, 20 

 meristems, 21-27 

 Appendix, 139-142 

 Apposition, method of Avall-thick- 



ening, 9 

 Aristolocliia, studv of stem of, 



119-120 

 Astrosclereides, in fruit of Cariju 



and Juglans, 70-71 

 in leaf of Camellia, 71 

 structure and occurrence of, 68 

 Arena, origin of leaf in, 24 



BARK, general comjiosition of, 

 107 



Bars of Sanio (see Crassulae), 



13, 89 

 Basswood, bast fibers of, 77-78, 

 113 

 cell walls in pith and cortex, 11 

 study of stem of, 111-117 

 Bast fibers, of TUia, 11, 77-78, 113 



wall structure in Tilia, 11 

 Bean, macrosclereides in testa of, 

 71 

 primary xylem in hyi^ocotvl of, 

 87^ 88 

 Begonia, photosynthetic paren- 

 chyma of, 59-60 

 Beta, vessel development in, 84 

 Betula, vessel elements of, 89 

 Bicollateral vascular bundle, in 



stem of Cucurhita, 98 

 Birch, vessel elements of, 89 

 Black locust, ontogeny of vessels 



in, 83-84 

 Blind pit, use of term, 11 

 Boehmeria, bast fibers in, 75 



fiber elongation in, 76 

 Bordered i^its, of tracheids, 82 

 pit-pairs, in ti'acheids of Pinus, 

 13, 88-89 

 study of, 13 

 Brachysclereides, in fruit of Pn- 

 rws, 70 

 structui-e and occurrence of, 68 

 Bracken fern, primary xylem 



tracheae of, 88 

 Branch gaps, use of term, 102 

 Branch traces, use of term, 102 

 Bud scale, anatomical character- 

 istics of, 128 

 study of anatomy of, 128 



143 



