INDEX 



145 



Cork, origin iuid structure of, 107 

 canibium (sec also jjliel logon) 

 origin and tuiK-tions of, 107-108 

 Corn, guard cells of leaf, 49 

 study of leaf of, 127-128 

 study of stem of, 118 

 Corpus, method of growth, 23 



role in tissue differentiation. 23 

 Cortex, of roots, 131 

 of stems, 102-103 

 origin of, 23 

 Cotton, "fibers" of, 73 

 Crassulae, definition of, 13, 8!) 

 Crystals, in photosynthetic paren- 

 chyma of Begonia, 59 

 natui'e of, 5 

 role of nucleus in formation 



of, 5 

 types of, 5-6 

 Crystal sacs, arrangement of, 5, 113 

 Cucurbita, sieve-tube elements of, 

 98-99 

 vessel development in, 84 

 vessel elements of, 84, 90 

 Cuticle, of epidermal cells, 46-47 

 Cutin, in walls of epidermal cells, 



47 

 Cifcas revoluta, diameter of shoot 

 apex, 22 

 shoot apex, 20 

 Cystolith, development in F/ntf^, 

 50-51 

 use of term, 51 

 Cytoplasm, in hair cells, 2 

 Cytoplasmic strands, in hair cells, 

 2 



streaming, in hair cells, 2-3 

 in leaf cells of Elodea, 3 



DATURA, angular collenclnnna 



of, 64-65 

 DaiiCHS, chrouioplasts of, 3 

 vessel development in, 84 

 Definitive — callus, on sieve-plates, 



97 



Delignification, of walls of sclere- 



ides, 69 

 Dermatogen (see also protoderm, 



tunica) 

 in shoot apex, 24 

 origin of epidermis from, 46 

 Dictyostele, general structure of, 



104 

 Dilatation, of i^hloem rays, 114 

 Dioon eclule, shoot apex, 20 

 Diospyros, endosperm of, 8 

 Druses, form and structure of, 5 

 Duckweed, rajjhides in, 5 

 Dutchman's Pipe, study of stem 



of, 119-120 



EL AE AGNUS, scales of, 54 

 Elodea, chloroplasts in leaf of, 3 



structure of shoot apex, 24 

 Emergences, origin and morphol- 

 ogy of, 51-52 

 Endarch xylem, in siphonostele of 



stems, 103 

 Endodermis, functions of, 134-135 



morphology' of, 104 



of roots, 131 



study of in Ranunculus, 134-135 

 Endosperm, plasmodesmata in, 8 

 Ephedra, vessel elements of, 82 

 Epidermal cells, form and struc- 

 ture of, 46-47 



IHts in walls of, 47 



wall-structure of, 47 

 Epidermal system, as defined by 

 Sachs," 34 



origin of, 24 

 Epidermis, a uniseriate la^'er, 46 



cell tyi^es in, 46 



functions of, 45 



Haberlandt's definition of, 45 



material for study of, 48-49 



multiple type of, 49-51 



of Allium, 48-49 



of geranium leaf, 49 



of German-Ivy leaf, 49 



