582 



INDEX 



Resin ducts, 133. 



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

 bic, 122; as observed in leaves, 

 269. 



Resting buds, 204. 



Resting cell, 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, 158-161; adven- 

 titious, 140; depth and spread, 

 141; direction of growth, 150-152; 

 excretions, 161; fascicled, 140, 

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

 agation, 163-165; in relation to 

 the soil, 152-158; main, 136; of 

 Ferns, 427, 428, 427*; pressure, 

 161; 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, 162. 



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

 427*. 



Rosaceae, 483. 



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



Rosette, 241, 241*. 



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*. 



Saccharose or sucrose, 277. 



Sac Fungi, 352; described, 363-379. 



Sago Palm, 446. 



Saponaria Vaccaria, 74. 



Saponins, 283. 



Saprolegnia, 353, 353*. 



Saprolegniales, 353; described, 353- 

 355. 



Saprophytes, 337. 



Sap wood, 202. 



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. 



Secondary leaves, 234. 



Secondary root, 102; origin, 150, 

 150*. 



Secretions of plants, 281. 



Secretory tissue, 133, 133*. 



Seed coat, 55; function, 56. 



Seed plants, 3; described, 445-470. 



Seedlings, 101; Common Bean type, 

 107, 106*; comparative size, 110; 

 Grass type, 102, 101*, 102*, 103*, 

 104*; Onion type, 106, 105*; Pea 

 type, 109, 110*; types, 102-110. 



Seeds, dissemination, 82-88; germi- 

 nation, 89-98; nature, 55; of 

 - Cycads, 450; of Pines, 457; purity 

 and analysis, 74-77; structure, 

 56, 57, 56*, 57*; testing germi- 



