600 



INDEX 



Red Clover, flower, 23, 12*, 23*; fre- 

 tilization in, 42*; hard seeds, 69; 

 impurities in seeds of, 75*; life 

 cycle, 469*; ovule, 38*; pistil, 36, 

 35*; pollination, 47*; seedling, 

 109, 109*. 



Red Heart Rot, 389. 

 Reduction division, 412, 413*; as re- 

 lated to segregation, 527, 554, 

 555*. 



Regions of growth, in roots, 145, 149, 

 145*, 149*; in stems, 213, 214*, 

 215*. 



Reproductive tissues, 133. 

 Reserve cellulose, 277, 277*. 

 Resins, 285. 

 Resin ducts, 133. 



Respiration, 96-98, 121-123; anaero- 

 bic, 122; as observed in leaves, 

 269. 



Resting buds, 204. 

 Resting sells, 299. 

 Resting period of seeds, 67-69. 

 Results of pollination, 50, 51*. 

 Reticulated vessel, 190*. 

 Rhizoids, 135; of Liverworts, 408, 



407*, 408*; of Moss, 418*. 

 Rhizome, 179, 180*; of Ferns, 427, 



427*. 



Rhizopus nigricans, 360-363. 

 Rhodophyceae, 324-329. 

 Riccia, 414, 414*. 

 Rind, of Corn stem, 187, 187*; of 



Potato, 128, 128*. 

 Ringing, 211. 

 Rivularia, 300, 300*. 

 Robert Hooke, 113. 

 Rockweeds, 322-323. 

 Root cap, 63, 143, 63*, 144.* 

 Root hairs, 131, 145, 131*, 146*, 



153*. 



Root Rot, 388. 



Roots, primary , secondary, permanent 

 and temporary, 102, 103, 101*, 

 102*, 103*, 104; described, 135- 

 152; absorption, 159-162; adven- 

 titious, 140; depth and spread, 

 141; direction of growth, 150-152; 



excretions, 162; fascicled, 140, 

 140*; fibrous, 138, 138*; in prop- 

 agation, 164-165; in relation to 

 the soil, 152-163; main, 136; of 

 Ferns, 427, 428, 427*; pressure, 

 162; prop or brace, 139; relation 

 to shoot, 136; tap-root, 139, 139*; 

 texture, 136; types of root sys- 

 tems, 138-141; water, air, and 

 parasitic, 163. 



Rootstock, 179, 180*; of Ferns, 427, 

 427*. 



Rosaceae, 483. 



Rose, family, 483; flowers, 483, 484*. 



Rosette, 241, 241*. 



Rosin, 285. 



Rubiaceae, 492. 



Rumex acetosella, 479*. 



Rumex, collenchyma cells in, 128. 



Runners, 175, 175*. 



Russian Thistle, 480, 480*. 



Rusts, 396-403; Apple, 401; of 

 Asparagus, 403; Black, 396; of 

 Pines, 402. 



Saccharomyces, 377, 377*. 



Sac Fungi, 352; described, 363-379. 



Sago Palm, 446. 



Saponaria Vaccaria, 74. 



Saponins, 286. 



Saprolegnia, 353, 353*. 



Saprolegniales, 353; described, 353- 



355. 



Saprophytes, 337. 

 Sap wood, 202.- 

 Sarcode, 113. 

 Sargasso Sea, 323. 

 Sargassum, 323, 323*. 

 Scenedesmus, 308, 308*. 

 Sclerenchyma fibers, 194. 

 Sderotinia fructigena, 368, 368*. 

 Sclerotium, 371, 371*. 

 Scouring Rushes, 435. 

 Scutellum, 63. 

 Sea Lettuce, 310, 310*. 

 Sea Palm, 319. 

 Seaweeds, 296. 

 Secondary growth, 214. 



