INDEX AND GLOSSARY 



461 



Receptacle, 128; of liverwort, 194; of 

 moss, 197. 



Receptive stigma, 134. 



Redbud, 381. 



Redroot, 242, Figs. 406, 411. 



Regular flower: the parts in each series 

 alike, (275). 



Reinforced fruit: other parts grown to 

 the pericarp, (311), 161. 



Reniform, 99. 



Respiration: taking in O, giving off 

 C0 2 , 82, (187); in seeds, 173. 



Resting bud, 36, 61. 



Resting-spore, 186. 



Rheum, 350. 



Rheumatism root, 360. 



Rhizoid, 186. 



Rhizome: underground stem; rootstock, 

 (44), Figs. 22-24, 27-29; propaga- 

 tion by, 18; starch in, 31. 



Rhododendron, 425; anther, 135. 



Rhodora, 425. 



Rhubarb, 3, 45, 350, Figs. 81, 82; bud, 

 36. 



Rhus, Figs. 421, 423. 



Ribbon grass, 86. 



Ribes, 395, Figs. 540-542. 



Rice, 152, 249, 250; starch in, 274, 275. 



Richardia, 328, Fig. 486. 



Ricinus, 352. 



Rings of annual growth, 111. 



Robinia, 380; spines, 109. 



Robin's plantain, 443. 



Rock cress, 366. 



Root, 2, 7, 69, Fig. 120; action, 69; aerial, 

 10, Figs. 12-14; climbers, 112, Fig. 174; 

 cutting, 20; growth, Figs. 25, 26; -hairs, 

 9, 69, Figs. 11, 121, 122, 125; -pressure, 

 73, 81; propagation by, 19; structure, 

 69, 295; system, 7; tubers, 32. 



Rootlets, 69, Figs. 120, 125. 



Rootstock: subterranean stem; rhizome, 

 (44); propagation by, 18. 



Rosa, 390, 



Rosaceae, 385. 



Rose acacia, 62, 380. 



Rose, 4, 249, 251, 390; climbing, 112; 

 cutting, Fig. 35; family, 385; hip, 161, 

 Fig. 292; mallow, 373; -moss, 371, Fig. 

 280; of Sharon, 62, 373; prickles, 109; 

 swamp, 390; variation, 238. 



Rotate, 144, Fig. 242. 



Round-headed trees, 64, Figs. Ill, 112. 



Rubber, 249. 



Rubiacese, 426. 



Rubus, 389. 



Rudbeckia, 438, Fig. 557. 



Rue anemone, 357. 



Rumex, 350, Fig. 512. 



Runner: a trailing shoot taking root at 

 the nodes, (56). 



Russian thistle, 170, 243, Fig. 114. 

 Rust, 91, 190, Figs. 352-357. 

 Rutabaga, 251. 

 Rutland beauty, 412. 

 Rye, 249; flower, 151, 152, Fig. 260; 

 -pollination, 138. 



Sage, common, 401; scarlet, 110, 401. 



Salsify, 33, 434. 



Salt-loving societies, 228. 



Salverform, 144, Fig. 241. 



Salvia, 401. 



Samara: indehiscent winged pericarp, 

 (312). 



Sambucus, 429. 



Sand-dune plants, Fig. 397. 



Sanguinaria, 363. 



Sap, 72; descent of, 87; -pressure, 73. 



Saphrophyte, 90, Figs. 133-135. 



Sapindaceae, 375. 



Saponaria, 354. 



Sassafras, 143. 



Savin, 327. 



Saxifragaceae, 393. 



Saxifrage, 276, 393. 



Scalariform: with elongated mark ngs, 

 (446). 



Scaly bulb, 33. 



Scape: leafless peduncle arising from the 

 ground, (262), Fig. 200. 



Sclerenchyma, 267, 282. 



Sclerotic tissue, 282. 



Score-card, 254. 



Scramblers, 112. 



Scrophularia, 406. 



Scrophulariacese, 404. 



Scutellaria, 402. 



Seaweeds, 181, 185. 



Secondary thickening, 291. 



Sedges, leaves, 102. 



Seed, coats, 171; dispersal, 166; dormant, 

 2; starch in, 31; -variations, 237. 



Segments, 145. 



Selection, 239. 



Self-fertilization: secured by pollen from 

 same flower; close-fertilization, (278). 



Self-heal, 402. 



Self-pollination: transfer of pollen from 

 stamen to pistil of same flower; close- 

 pollination, (278). 



Seneca snakeroot, 379. 



Senna, 385. 



Sensitive fern, Fig. 437. 



Sepal: one of the separate leaves of 

 a calyx, (266), Fig. 209. 



Septicidal: dehiscence along the parti- 

 tions, (317). 



Serrate: saw-toothed, (212). 



Service berry, 391 



Sessile: not stalked, (207), Fig. 201. 



Shadbush, 391. 



