146 



INDEX 



Epidermis, of Iris leaf, 49 



of onion bulb-scale, 48-49 



of Pelargonium, 49 



of petals, 46 



of roots, 131 



of Senicio, 49 



of stems, 102 



of Syringa, 124-12.'5 



origin from jirotoderm, 45-4() 



use of term, 45 

 Ergastic substances, general na- 

 ture of, 4 

 Exarch xylem, in protostelo of 

 stems, 103 



in stele of roots, 132 



FASCICULAR cambium, use of 

 term, 106 



system, as defined by Sachs, 34 

 Fibers, classification of, 74 



form and length of, 74-75 



functions of, 73 



initials of, 76 



material for study of, 77-78 



microchemical tests for walls of, 



multinucleate protoplasts of, 



76-77 

 non-sclerotic types of, 75 

 occluded hunen of, 75 

 of flax, 73 

 of hemp, 73 

 of textile i)lants, 73 

 ontogeny of, 76-77 

 positions in plant, 74 

 sderenchymatous types of, 75- 



76 

 sliding-growth of, 76 

 structure and composition of 



Avails, 75 

 use of term, 73 

 vestigial pits in, 14-15, 75 

 Fiber-tracheids, develojiment of 



septa in, 77 

 of Villus, 88 



Ficits, cystolith of, 51 



multiple epidermis of, 50-51 



Flax, fibers of, 73-74, 75-76 



Flower, anatomical interpretation 

 of, 101, 102 



Free-hand sections, preparation 

 of, 139-140 



Fundamental tissue system, as de- 

 fined by Sachs, 34 



Fusiform initials, 27, 106 



CERAXIUM, cell Avails in pith 

 and cortex, 11 

 druses in, 5 

 multicellular nnbranched hairs 



of, 53 

 study of epidermis of, 49 

 study of stem of, 108-111 

 Ginkgo, shoot apex, 20 

 study of leaf of, 128 

 Grape-vine, septate fibers of, 78 

 (rround uieristem, origin of col- 



lenchyiiia from, 63 

 GroAving point (see also shoot 

 apex), critique of term, 21 

 Guard cells, structure of, 47 



HAIRS (see also Trichomes), 



staminal hairs of Trades- 



cantia, 2 

 types and structure of, 52 

 TIalf-bordered pit-pairs, stricture 



of, 14 

 study of, 14 

 Ilanstein, histogen tiieory «)f, 23, 



25-26 

 Hemp, fibers of, 73-74, 75 

 Hiium, in starch-grains, 4 

 Hi])f)iiiis, structui-e of shoot apex, 



24 

 Histogen theory, as applied to 



roots, 26 

 contrasted Avitli tunica-corpus 



tlu'ory. 23-24 

 Hoisc-clicslinit, colletei's on bud 



scales of, .54 



