-16- 



Ro^ella 115. 



Rozites 115. 



Rubia 97. 



Rubiaceae, Bacterial knots 186.. 



Rubigo 104, 



Rubus 8, 109, 



RMimentary leaves of Spahagnup 40. 



Rumex 97. 



Ruppia 176. 



Ruscus 170. 



Saccharomycetes, Cf, Yeast. 



Saccharus 119, 



Sac galls 192, 



Sagittaxia 17, 41, 



Salvia 109. 



Salicineae, Tendency to the formation of tyloses 96. 



Salix 16, 17, 44, 56, 72, 74, 75, 97, 109, 141ff,, 164, 

 189, 195ff. (Nematus galls). 



Sambucus 16, 74, 89, 97. 



Santalum 97. 



Sap streams Descending, Influence on the formation of 

 anthocyanin 57, On tissue production (Callus) 

 154. 



Sargassum 141, 



Sarothamnus 75. 



Saxifraga 57, 



Saxifragaceae 57. 



Scale on Lemons 34, Producing kataplasmas 178, Cf ^ also 

 Coccus. 



Sceletonema 29. 



Scenedesmus 28, 38, 117, 



Sclerids in Callas 151, Physiological significance 129ff,, 

 In galls 208. 



Sclerotia, Regeneration of the bark tissue 15,, 



Schinus 97. 



Schizoneura lanuginosa 123, 192ff., Fig. 134, S. lan- 

 igera 178ff., Pig. 76, 78, 



Scitamineae, Tendency to the formation of tyloses 96. 



Scutellaria 109. 



Secretions in and on Galls 220, 



Secretion Reservoirs, Pilled with tyloses 99., In galls 

 220. 



Secondary Tissues, Hypoplasia: Reduction of the cell 



number 19ff., Of Tissue differentiation 47.. 



Sediwa 8, 56, 147, 



Seed Receptacles, Hypoplasia 47. 



Selaginella 141. 



Sempervivum 71, 



Senility Phenomena: Formation of tyloses, lOOff. 



Separation, Tissue of, In autumnal leaf fall 170, 



Shade Leaves, Impoverishment of the mesophyll , 



Reduction of the cell number, cell size 

 and tissue differentiation 19ff , Bio- 

 logical significance 48.« 

 Short Rods of Bacterium Pasteurianum 68, 69, 

 Sieve Tubes, Hew formation of cell walls after 



plasmolysis 10.« 

 Siphoneae, Regeneration 7ff., Hypoplasia: Sim- 

 plification of the cell form 27ff., In 

 symbio);is with sponges 28, Abnormal 

 cell wall thickenings 61, Abnormal forms 

 115, Gall on Siphoneae 115. 



