INDEX 



447 



Root-cap, 1 8, 20 (fig.), 65, 71 (fig.), 



Root-hairs, 3, 10, 13, 65, 66, 67 



(fig.) ; function of, 72. 



Root-nodules of Leguminosae, 267, 

 268. 



Roots, aerial, 73, 74, 75 (fig.) ; 

 anomalous thickening of, 133 ; 

 cork-formation in, 131 (fig.), 

 137 ; fleshy , 132, 133, 154, 

 155 (fig.) ; growing point of, 

 16, 18, 20 (fig.) ; lateral , 65, 

 71 (fig.) ; of Ferns, 290, 303 ; 

 of Horsetails (Equisetum), 311 ; 

 of Lycopodium, 315 ; of Ly- 

 ginopteris, 328 ; of Selaginella, 

 317 (fig.) ; prop , 73, 74 (fig.) ; 

 relation of structure and func- 

 tion in, 72 ; secondary thicken- 

 ing of, 131 (fig.), J 3 2 ', transi- 

 tion from stem to, 89 (fig.). 



Root-structure of, Bean (Phaseolus}, 

 71 (fig.); Beet (Beta), 133; 

 Conifers, 341 ; Creeping Butter- 

 cup (Ranunculus repens), 66-9 

 (figs.) ; Dandelion (Taraxa- 

 cum), 154 ; Dendrobium, 75 

 (fig.) ; Dicotyledons, 65-70 

 (figs.) ; Ferns, 295 ; 7ns, 70 

 (figs.) ; Leguminosae, 72 ; Ly- 

 ginopteris, 330 ; Maize (Zea 

 mats), 73, 74 (fig.) ; Monocoty- 

 ledons, 70 (fig.), 71 ; Nettle 

 (Urtica), 132 ; Salsify (Trago- 

 pogon), 44, 132, 154, 1.55 (fig.) ; 

 Selaginella, 318 ; Wallflower 

 (Cheiranthus cheiri), 70 ; White 

 Mustard (Sinapis alba), 69. 



Rope, 34. 



Rosaceae, 137, 355, 357. 



Rose (Rosa), 104, 137, 389 ; Mil- 

 dew (Sphaerotheca pannosa), 



243- 



Rosette-habit of Alpines, 170. 

 Rosin, 63. 



Rotation of crops, 248, 267. 

 Royal Fern (Osmunda regalis), 



habit of, 289, 309 (fig.) ; pro- 



thallus of, 304 ; sporangia of, 



300, 309 (fig.). 

 Rubia peregrina, stoma of, 97 (fig.), 



98. 



Rubiaceae, 61. 

 Rubber, 157. 

 Rue (Ruta graveolens), secretory 



cavities of, 151. 

 Rumex, 113. 

 Runner Bean (Phaseolus}, 115, 



371 ; epidermis of stem of, 



93, 94 (fig.) ; hydathodes of, 



144, 145 (fig.), 147. 

 Ruscus aculeatus, cladode-structure 



of, 159 (fig.), 166. 

 Rush (Juncus), 178 ; leaf-structure 



of, 165 (fig.), 166. 

 Rust-Fungi (Uredineae), 143, 245-8 



(fig.), 252, 253, 407. 

 Rust of Wheat (Puccinia graminis), 



384 ; structure and life-history 



of, 245-7 (fig.). 

 Ruta graveolens, secretory cavities 



of, 151. 

 Rye (Secale), fungal diseases of, 



239, 241. 



Saccharomyces, physiology of, 53, 

 54, 56, 57, 256, 257, 265 ; 

 structure and reproduction of, 

 255, 256 (fig.). 



Saccharose, 45. 



Saccharum officinavum, 45, 46. 



Saffron, 64. 



Safranin, 404, 405. 



Sagittaria, embryology of , 371 (fig.). 



Sago, 43, 323. 



Sago-Palm (Cycas revoluta), 322, 



323. 



St. John's Wort (Hypericum), secre- 

 tory organs of , 151, 153. 



Sake, 257. 



Salicaceae, 357. 



Salicase, 48. 



Salicin, 48. 



Salicornia, aerenchyma of, 175 



(fig-)- 



Saligenin, 48. 



Salmon-disease (Saprolegnia ferox), 

 230, 236. 



Salsify (Tragopogon) , root-structure 

 of, 44, 132, 154, 155 (fig.). 



Salsola kali, leaf of, 94, 166. 



Saltmarsh plants, 178, 216; root- 

 hairs of, 10. 



Sambucus, cork of, 136 (fig.) ; leaf 

 of, no, in (fig.) ; lenticels of, 

 140 (fig.) ; pith of, 30 (fig.), 

 151. 



Samphire, Marsh (Salicornia), 

 aerenchyma of, 175 (fig.). 



Sand-dune plants, 163. 



Sandalwood (Santalum album), 130. 



Sap, cell, 3, 6, 10, 26, 60, 63 ; 

 nuclear , 22. 



Sap-wood, 125, 126. 



Saponaria, 48. 



Saponification of fats, 49. 



