IXDEX 



Pome, 203. 



Pondwceds, 237. 



Poplars, 255. 



Popowia, liiS. 



Poppy, 261. 



Poppy family: see Papaveraceae. 



Populus, 256. 



Pore-fungus, 72. 



Potamogeton, 237, CSS. 



Potato : see Solanum. 



Potentilla, i'..'5. 262. 



Proteid, 302. 



Prothallium, 130, ISJ, 1,H. 



Protocooous forms, 22. 



Pi'otonema, 95, 98. 



Protoplasm, 7. 



Prunus, ■:ilJ. 262. 



Pseudomonas, 76'. 



Pseudopodium, 105, 123, 124. 



Pteridophytes, 2, 128, 172, 291. 



Pteris, 133, loJ,, 135, 137, Ul, W 



148, 145, :'S1, ~'91, S02, 293. 

 Ptilota, Jf.2. 



Puccinia, G3, G4, 65, 66. 

 Puff-balls, 68, 74. 

 Pulvinus, 308. 



Q 



Quillwort : see Isoetes. 



R 

 Rabdonia, 4i- 

 Radiate bundle, 294. 

 Radicle, 209. 

 Radish, 120. 



Ragweed : see Ambrosia. 

 Ranunculaceas, 261. 

 Ranunculus, 23S, 259. 

 Raspberry : see Rubus. 

 Rays, 275, ^76. 

 Receptacle, SSB. 

 Red algffi, 6, 38. 



Redbud : see Cercis. 



Redwood: see Si'i|Uoia. 



Reproduction, 3, 8. 3ii9. 



Respiration, 302. 



Rheotropism, 307. 



Rhizoid, 109, 110, 134. 



Rhizophores, 104. 



Rhododendron, 270. 271. 



Rhodophycea", 6, 3s. 



Riecia, I04, 110. 



Ricciocarpus. 110. 



Ricinus. 2SS. 



Kobinia, 265. 



Root, 138. 217, 293, 29 Jf, 313. 



Root-cap, 293. 



Root-fungus. 87. 88. 



Root-hairs, 217. 300. 



Root-pressure, 300. 



Root-tubercles, S9. 



Rosacea'. 262. 



Rose family : see Rosaceae. 



Rosin-weed : see Silphium. 



Rosmarinus, 275. 



Royal fern : see Osmunda. 



Rubus, 2i;2. 



Rumex, 284. 



Rust, 62, 63, 6J,. 65, 66. 



S 

 Sac-fungi, 57. 

 Sage: see Salvia. 

 Sage-brush : see Artemisia. 

 Sagittaria, 208, 338. 

 Salix, 219, 233, 256, 257. 

 Salvia, 275. 

 Salvinia, 158. 

 Saprolegnia, 51. 52. 

 Saprophyte, 48, 84. 

 Sap-wood, 289. 

 Sargassum. 35, 36. 

 Saururus. 219, 258. 

 Scales, 161. 



