352 



INDEX AND GLOSSARY 



Protein, 249. [(265) 



Proterandrous : anthers maturing first, 

 Proterogynous : pistils maturing first, 

 Prothallus, 173, Pig. 312. [(265). 



Protococcus, 233, 234. 

 Protonema, 191. 

 Protoplasm, 80, 233. 

 Prunus, 321, Figs. 476-480. 

 Pseud-annual : perennial by means of 



tubers, bulbs, etc., (13). 

 Pteridophyte, 176. 



Pteris aquilina, 173, 237, 286, Pigs. 125, 308. 

 Puceinia graminis, 183, Figs. 325-330. 

 Pulse family, 316. 



Pumpkins and corn, 213, Fig. 358; flower, 

 137; collenchyma, 254 ; fruit, 155; hairs, 

 270; roots, 268. 

 Pussies of willow, 117, Fig. 213. 

 Pyrus, 323. 



Pyxis: pod opening around the top, (292), 

 Quack-grass, 19, 20. [Fig. 254. 



Quercus, 299, Figs. 441-447. 

 Quillwort, 193. 



Quince fruit, 155. Quince-pear graft, 28. 

 Raceme: simple elongated indeterminate 

 cluster with stalked flowers, (2Sr), Fig. 

 Radial, 261; bundles, 267. H* - [173. 



Radish and light, 42, Fig. 70; fruit, 152; 



root, 7, 13, 17, 64, Figs. 

 Ragweed, 222, 225, 336, Fig. 497; great, 336. 

 Ranunculus, 309. 

 Raphides, 250. 

 Raspberry, 20, 21, 161, 322, Fig. 263; fruit, 



153; leaf, Fig. 128. 

 Ray; outer modified florets of some com- 

 posites, (282). 

 Reagents, 241. 



Receptacle, 123; of liverwort, 187. 

 Regular flower: the parts in each series 



alike, (258). 

 Reinforced fruit : other parts grown to 



the perisarp, 153, (286). 

 Reniform, 94. 

 Resins, 246. 

 Respiration : taking in O, giving off 



CO2, (172, 173); in seeds, 165. 

 Resting-spore, 179. 



Pheum Rhaponticum, 305, Figs. 78, 79. 

 Rhizome: underground stem; rootstock, 



(44), 19; starch in, 31. 

 Rhododendron anther, 129. 

 Rhubarb, 3, 36, 45, 305, Figs. 78, 79. 



Ribes, 324, Figs. 481-483. 

 Rice starch, '249. 



Richardia Africana, 290, Fig. 427. 

 Rind, 259. 



Rings of annual growth, 107, 263. 

 Robinia spines, 105. 



Root-climbers, 108; cutting, 21; -hairs, 9, 

 12, 64, Figs. 11, 103-105, 110; -pressure, 

 69, 73, Fig. 109; system, 7; excrete, 71; 

 how elongate, 17; need air, 70 ; propa- 

 gation by, 20; structure, 259, 267. 

 Rootstock : subterranean stem ; rhi- 

 zome, 19, (44). r 3 <, 3 

 Rosa Carolina, 323; humilis, 323; lueidal 

 Rose cutting, Fig. 34 ; family, 319 ; hip, 

 155, Fig. 265; mallow, 313; -moss, Fig. 

 254 ; of Sharon, 313 ; swamp, 323 ; 

 climbing, 108; prickles, 105. 

 Rotate, 137. 



Rubus, 322, Figs. 158, 263. 

 Rudbeckia hirta, 337, Fig. 498; laeiniata, 

 Rumex, 305, Fig. 453. [337. 



Runner: a trailing shoot taking root at 



the nodes, (56). 

 Russian thistle, 163, Fig. 99. 

 Rust, 85, 183. 

 Rye flower, 146, Fig. 239. 

 Saccharose, 245. 



Sacred lily, Chinese, 295, Fig. 435. 

 Sage, common, 107, 327; scarlet, 327. 

 St. John's-wort, 125, Figs. 192, 252. 

 Salt-loving societies, 219, Fig. 371. 

 Saltpeter, in osmosis, 66. 

 Salverform, 137. 



Salvia officinalis, 327; splendens, 327. 

 Samara : indehiseent winged pericarp 



(287). 

 Sambucus Canadensis, 334; racemosa, 334. 

 Sapindacese, 315. 

 Saponaria officinalis, 307. 

 Saprophyte, 85, 86, 200. 

 Sassafras, 136. 



Saxifragaceaa, 323; crystals, 250. [(390) 

 Scalariform: with elongated markings, 

 Scape: leafless peduncle arising from the 



ground, (248). 

 Scenery and plants, 202. 

 Sclerenchyma, 236, 257. 

 Scouring rush, 193. 

 Scramblers, 108. 

 Scrophulariaceae, 331. 

 Secondary thickening, 263. 



