352 



INDEX AND GLOSSAKY 



Protein, 249. [(265). 



Proterandrous : anthers maturing first, 

 Proterogynous : pistils maturing first, 

 Prothallus, 173, Fig. 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, Figs. 125, 308. 

 Pticcinia 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, (237), Fig. 

 Radial, 261; bundles, 267. [173. 



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



root, 7, 13, 17, 64, Figs. 11, 103. 

 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. 



Fheum 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). [323 



Rosa Carolina, 323; humilis, 323; lueidai 



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; laciniata, 



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 : indehiscent winged pericarp 

 (287). 



Sambucus Canadensis, 334 ; racemosa. 334. 



Sapindacese, 315. 



Saponaria officinalis, 307. 



Saprophyte, 85, 86, 200. 



Sassafras, 136. 



Saxifragaceae, 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. 



Scrophulariacese, 331. 



Secondary thickening, 263- 



