INDEX 



363 



Reproduction, 3; asexual, 107; 

 blue-green Algae, 101; red Algae, 

 126; sexual, 107; vegetative 

 multiplication, 101, 



Reservations, forest, 322. 



Resin, 219. 



Respiration, 87. 



Rhizoid, 167. 



Rhizome, 63; self-burial, 67. 



Rhodophyceae, 124. 



Rib, 7. 



Riccia, 172. 



Ricciocarpus, 172. 



Rice, 269. 



Rockweed, 118. 



Root, 71; absorption, 78; air, 82; 

 bast, 74; branch, 76; cambium, 

 75; clinging, 81; cuttings, 70; 

 growth, 76; diameter increase, 

 75; hair, 74; internal structure, 

 74; phloem, 74; primary, 72; 

 prop, 80; secondary, 72; special 

 forms, 80; tap, 72; vascular 

 cylinder, 74; water, 80; wood, 

 74; xylem, 74. 



Root-cap, 73. 



Root-cuttings, 70. 



Root-fungus, 159. 



Root-hair, 74, 78. 



Root-pressure, 58. 



Rootstock, 63; self-burial, 67. 



Root-tubercles, 136. 



Rosaceae, 286. 



Roses, 286. 



Rosette-habit, 11, 28. 



Rubiacese, 307. 



Runner, 47. 



Rust, 149. 



Rye, 266. 



Sac Fungi, 146. 

 Sago-palm, 276. 



Salt marsh, 336. 



Salt meadow, 336. 



Salt steppe, 344. 



Sand, 77. 



Sand-binder, 339. 



Sap, ascent, 57; maple, 58. 



Saprophyte, 129. 



Sargassum, 119. 



Sarracenia, 35. 



Scale, 26, 34. 



Scion, 56. 



Scouring rush, 198. 



Sea lettuce, 116. 



Seed, absorption of water, 86; 



Angiosperm, 237; conifer, 217; 



dispersal, 255; germination, 84, 



218; structure, 84. 

 Seed-dispersal, 255; air, 257; 



animals, 260; discharge, 255; 



water, 259. 

 Selaginella, 203. 

 Selection, 318. 

 Self-burial, 67. 

 Self-pollination, 243. 

 Sensitive plant, 30. 

 Sepal, 221. 

 Sequoia, 211, 219. 

 Shaddock, 299. 

 Shade-plant, 326. 

 Shoot, 41. 

 Sieve plate, 53. 

 Sieve vessel, 53. 

 Siphon forms, 116. 

 Societies, 324. 

 Soil, 77. 

 Solanaceae, 304. 

 Sorus, 191. 

 Species, 263. 

 Sperm, Angiosperm, 235; conifer, 



216; cycad, 211; fern, 194; 



liverwort, 169; moss, 177; (Edo- 



gonium, 110; red Algae, 126. 



