446 



INDEX 



Picea, 350; Pinus, 344, 345 (fig.), 

 346, 34.7 (fig.), 348, 349 (fig.), 

 350, 351 (fig.), 352 (fig.), 353 ; 

 Pleurococcus, igi, 192 (fig.) ; 

 Polypodiutn, 296 ; Polyporus, 

 250 (fig.) ; Polytrichum, 274, 

 (fig.), 286 ; Pteris, 296 (fig.), 

 300 ; Puccinia graminis, 245-7 

 (fig.) ; Pythium, 234, 235 (fig.), 

 236 ; Rhodophyceae, 205 (fig.), 

 228 ; Riccia, 284 ; Saccharo- 

 myces, 256 (fig.) ; Saprolegnia, 

 235 (fig.), 236 ; Scenedesmus, 

 192 ; Sclerotinia, 239 (fig.), 

 241 ; Scolopendrium, 296 (fig.) ; 

 Selaginella, 318-20 (fig.) ; 

 Sequoia, 347, 352 (fig.) ; Sphag- 

 num, 275 (fig.) ; Spirogyra, 

 216, 226-8 (fig.) ; Taxus, 



344, 345, 346 (fig.), 347; 

 Thuja, 337 (fig.), 347, 350; 

 Tuber, 240, 241; Ulothrix, 212- 

 15 (figs.), 220; Uredineae, 

 245-8 (fig.); Ustilagineae, 

 248 ; Vaucheria, 217, 218 

 (fig.), 220, 221 (fig.), 223, 

 224 ; Volvox, 190 ; Xylaria, 

 2 39 (fig-), 2 4 2 ; Zygnema, 226-8 

 (fig.) ; Zygomycetes, 236-8 (fig.). 



Reproductive cells, asexual, 212, 

 219. See Gonidia, Spores, and 

 Zoospores. 



Reproductive cells, sexual, 184, 

 214, 220. See Egg, Gametes, 

 and Spermatozoids. 



Resedaceae, distribution of, 394 (fig.) . 



Reserve-cellulose, 48, 53 ; hydroly- 

 sis of, 53. 



Reserve-substances, 40-52, 242, 

 319 ; accumulation of, 13 ; in 

 seeds, 40, 44, 45, 47, 49, 50, 

 52, 333, 35i ; in storage-organs 

 other than seeds, 44, 45, 50 ; 

 nitrogenous, 50 ; storage of, 

 40, 88, 132 ; translocation of, 

 6, 41, 46, 52, 124, 132, 282. 



Resin-cells, 340. 



Resin-passages, 63, 339 (fig.), 340, 

 341, 342 (fig.), 343, 344 (fig.). 



Resins, 63, 64, 125, 151, 155, 334. 



Resistance to, bending, 115, 172; 

 disease, 265, 384 ; drought, 

 1 86, 191, 205, 215 ; pulling 

 strains, 72, 88, 170 ; tearing, 



93, US- 



Respiration, 178, 201, 257 ; and 

 protoplasmic movement, 4 ; 

 of fat-containing seeds, 50. 



Respiratory cavity, 97, 108 (tig.), 

 no, 164 (fig.), 166, 343. 



Resting nucleus, 21 (fig.), 22. 



Resting stages of, Chlamydomonas, 

 188; Cladophora, 216; Fungi, 

 241 (fig.) ; Hcematococcus 

 (Sphaerella), 187 (fig.), 188 ; 

 Mucor, 238 ; Ulothrix, 215 

 (fig.) ; Yeast, 256 (fig.). See 

 also Oospores and Zygospores. 



Retention of megaspores, 321, 332, 



333- 



Reticulate tracheids, 113 ; veins, 

 112 ; vessels, 35 (fig.), 36, 83 



(fig-)- 



Retinospora, 337. 

 Retting of fibres, 265. 

 Rheum rhaponticum, 113. 

 Rhinanthus, hydathodes of, 144, 



. J 45 (fig-)- 



Rhizocarpon confervoides, 258 (fig.). 



Rhizoids of, Fern-prothallus, 299 

 (fig.), 300, 301 (fig.) ; Liver- 

 worts, 270 (fig.), 271, 272, 273 

 (fig.), 278 (fig.) ; Mosses, 274, 

 287 (fig.), 288. 



Rhizomes, 82, 88, in ; of Ferns,. 

 289, 290 (fig.) ; of Horsetails 

 (Equiseturri) , 311 (fig.) ; of 

 Mosses, 274. 



Rhizophores (of Selaginella}, 317 

 (fig.), 3i8. 



Rhizopus stolonifer, 237. 



Rhodophyceae, 203, 406 ; reproduc- 

 tion of, 205 (fig.), 228 ; struc- 

 ture of, 203, 204, 205 (fig.), 208. 



Rhubarb (Rheum rhaponticum], 113. 



Rhus vermicifera, 155. 



Ribes, 105, 115 ; cork of, 137, 138 



(fig-)- 



Riccia, 284, 407. 

 Rice (Oryza sativa], 43, 53, 257 ; 



starch of, 42 (fig.), 43. 

 Ricinus communis, aleurone grains 



of, 50, 51 (fig.) ; fat of, 49 ; 



hypocotyl of, 118 (fig.) ; seeds 



of, 37 1 , 372, 37 6 (fig-)- 

 Ring-bark, 141. 

 Ringworm, cause of, 253. 

 Rivularia, 206 (fig.). 

 Robinia pseudacada, 115, 126. 

 Roccella, 261. 

 Rock-pools, plants of, 195, 203, 



204. 

 Rock Rose (Helianthemum vulgar e), 



379 (fig-)- 

 Rolled leaves, 178 ; structure of, 



163 (fig.), 164 (fig.). 



