594 



IXDEX, PART I. 



Bate of growth, 208. 

 Receptacle, 54, 271, 310, 443. 

 Receptive spot, 241. 

 .Region of elongation, 208. 

 Regular flower, 453. 

 Rejuvenescence of cells, 87 (Fig. 62). 

 Replura, 474 (Fig. 288), 536. 

 Reproduction, 49, 227. 

 Reproductive organs, 49, 459. 



asexual, 51. 



sexual, 58. 



property of protoplasm, 158. 

 Reserve materials, 201. 

 Resin-ducts, 98 (Fig. 77), 421. 



-sac, 98 (Fig. 79). 

 Respiration, 197, 200. 

 Resupinate, 455, 503. 

 Retardation of growth by light, 162. 

 Reticulate vessels, 74. 

 Retinaculum, 413, 504. 

 Rhachis, 54. 

 Rhipidium, 441. 

 Rhizine, 276, 307 (Fig. 188). 

 Rhizogenic cells, 135, 347, 364. 

 Rhizoid, 309. 

 Rhizome, 26 (Fig. 14). 

 Rhizophore, 390. 

 Rib, 34. 



Ricinolein, 187. 



Ring, 57, 302 (Fig. 182), 343 (Figs. 

 208, 210), 363 (Fig. 215), 382 

 (Fig. 228). 

 Ringent, 563. 

 Rise of temperature in germinating 



seeds, 203 (Fig. 129). 

 Roots, 3, 44. 



adventitious, 9, 136. 



aerial, 45, 106 (Fig. 87). 



branching of, 45, 133 (Fig. 107). 



functions of, 167. 



growing-point of, 102 (Figs. 84, 

 86). 



growth in thickness of, 138 

 (Figs. 109, 110). 



primary, 44, 347. 



structure of, 109 (Fig. 91), 115 



(Figs. 94-96), 125 (Fig. 102). 

 Root-cap, 44, 104 (Figs. 84, 86), 109. 

 Root-hairs, 46, 110 (Fig. 91) 168 



(Fig. 123). 

 Root-pressure, 182. 

 Root-tubercles, 191. 

 Rostellum. 413 (Fig. 244), 504. 

 Rotate, 458 (Fig. 274). 

 Rotation of protoplasm, 204. 

 Runner, 26. 



Sac, 98 (Figs. 58, 78, 79). 

 Sagittate, 37. 

 Salicin, 187. 



Samara, 473, 516 (Fig. 326\ 545 (Fig. 



357). 



Saprophyte, 189, 275. 

 Scalariform vessels, 74. 

 Scaly leaves, 42, 175. 

 Scape, 442. 



Scattered development, 10. 

 Schizocarp, 473 (Fig. 287). 

 Schizogenous, 89, 98. 

 Scion, 229. 



Sclerenchyma, 92, 111, 120, 140. 

 Sclerenchyinatous tissue, function 



of, 164. 



Sclerotic cells, 92 (Figs. 70, 71). 

 Sclerotium, 277, 285, 290 (Fig. 176). 

 Scorpioid cyme, 21 (Fig. 11), 441. 



dichotomy, 19 (Fig. 9). 

 Scutellum, 477 (Fig. 292). 

 Scutiform leaf, 377. 

 Secondary bast, 139, 143. 



conjunctive tissue, 144. 



cortical tissue, 149, 154. 



members, 8, 132. 



sclerenchyma, 140. 



tegumentary tissue, 149, 151. 



tissues, differentiation of, 145. 

 formation of, 137. 



tracheal tissue, 140. 



wood, 140 (Fig. 111). 



wood-parenchyma, 140. 

 Secretion, 166. 

 Secretum, 101 (Fig. 82). 

 Sectile pollinium, 504. 

 Seed, 53, 62, 394, 414 (Fig. 245), 431. 

 Segmentation of apical cell, 104 



(Figs. 85, 86). 

 Segmentation of body, 3. 

 Self-pollination, 409. 

 Semi-amplexicaul, 30. 

 Sensitive petiole, 175 ^Fig. 127). 



plant, 174 (Fig. 126), 212, 221, 



226. 



Sepal, 58, 175, 443. 

 Septate body, 63. 



Septicidal dehiscence, 475 (Fig. 289). 

 Septifragal dehiscence, 475 (Fig. 



289)T 



Septum, 1, 63, 84. 

 Serrate, 35, 37. 

 Sessile, 32 (Fig. 20), 55, 439. 

 Seta, 54, 315, 319, 337 (Figs. 208, 



211). 



of Carex, 493. 

 Sex, 231. 

 Sexual form, 2. 



organs, 60. 



process, 50, 232. 



system, 233. 

 Sexuality, 230. 

 Shield, 261. 



