Subject lndkx 



7 03 



Stegnra, 538, 541. 

 Stele, see Central cylinder. 

 Stereide, 152 sqq., 210, 404, 465. 590 ; see 

 also Bast-fibre, Sclereide, and Wood- 

 fibre. 

 Stereome, 152 sqq. 



continuity of, 676. 



effect of humidity on, 107. 



effect of tension on, 196. 



effect of wind on, 194. 



in buttress-roots, 188, 189. 



in climbers, 186. 



in tendrils, 180, 195, 564, 565. 



in water-plants, 186. 



tubular, see Stereome cylinder. 

 Stereome-cylinder, 175, 176 sqq., 185. 

 Stilt-root, see Buttress-root. 

 Stimulation, protoplasmic, 571. 

 Stimulator, 585, 586, 589, 592. 



optical, 630. 

 Stimulus and response, 543, 571. 

 Stimulus, mechanical, 574. 575. 



perception of, 571. 



rate of transmission of, 633, 639, 645. 



transmission of, 33, 34, 45, 72, 574, 632 

 sqq. 



traumatic, 569, 633, 040. 

 Stinging-hair, 129, 130, 131, 535. 

 Stoma, 445 sqq., 483, 508. 



Amaryllis-type, 449, 454. 



aquatic type, 467, 469. 



functionless, 2, 474 sqq. 



Glumifloral type, 451, 452. 



Helleborus-type, 454. 



mechanism of, 448 sqq. 



Mnium-type, 452, 453. 



occlusion of 465, 466. 



raised, 474. 



sunken, 461 sqq. 

 Stomata, movements of, 458 sqq. 

 Stomatic diffusion, 433, 456. 

 Stomatic pore, 445. 

 Stone-cell, 3, 158, 160. 

 Storage for ecological purposes, 396, 428. 



of respiratory materials, 396, 426, 427. 

 Storage-cell, 397 sqq. 

 Storage -system, 71, 395 sqq:, 684, 689, 697 



sqq. 

 Storage-tissue, 42, 46, 362, 365, 396, 418 

 sqq., 662. 



local, 426. 

 Storage -tracheide, 366, 406, 407. 408. 

 Stratification, 45, 46. 

 Striation, 46, 551. 



Stroma (of chromatophore), 37, 266. 

 Strophiole, see Aril. 

 Structural element, 15. 



unit, see Structural element. 

 Struggle for existence, 5, 6. 

 Suberin, 134. 

 Suberin-lamella, 134, 369. 

 Suberisation, 47, 48, 61, 226, 369, 372, 503. 

 Sulphate, 42. 

 Sim-leaf, 295 sqq., 388. 

 Surface-position of chloroplast, 272, 273. 

 Suspensor as haustorium, 245. 



Suture, cellular. I 19, 120. 



cuticular, 120. 

 Switch-plant, 27.""., 298. 

 Symmetrica] illumination, 618 sqq. 

 Symplast, 636. 

 Syncyte, 18. 

 System, absorbing, 71, 214 sqq. 



((inducting, 71, 302 sqq., 649, 655 sqq. 

 659. 



conducting, in .Musses. 311. 312, 315, 



conducting, in twiners, 324. 



conducting, in water-plants, 323. 



dermal, 71, 100 sqq. 



execretory, 71, 486, 526 sqq., 667. 



mechanical, 65, 71, 150 sqq.. 362, 648, 

 659, 685. 



meristematic, 71, (549 sqq. 



photosynthetie, 71, 261 sqq., 700, 701. 



reproductive, 72. 



secretory, 71, 485, 487 sqq., 667. 



sensory, 72. 



skeletal, see System, mechanical. 



stimulus-transmitting, 71, (532 sqq. 



tegumentary, see System, dermal. 



vascular, see System, conducting. 



ventilating, 71, 432 sqq., 668, 689. 

 Systrophe, 273, 274. 



Tactile bristle, 574, 575, 589 sqq., 640. 



Tactile hair, 575, 586 sqq. 



Tactile papilla, 575, 580 sqq. 



Tactile pit, 575 sqq. 



Tannin, 42, 119, 135, 140, 337, 338, 417, 48(5, 



514, 528, 541, 667, 685. 

 Tannin-sac, 528, 541. 

 Teleological explanation, 1. 

 Tendril, 324. 565. 575 sqq., 580, 585, 633, 



636. 

 Tendrils, tensile strength of, 196. 

 Tension-flange, 181. 

 Tentacle, 503, 504, 578, 579. 

 Thickening, centrifugal, 43, 49. 



centripetal, 43, 44. 

 Thickening fibre. 308. 309. 408, 551, 661. 



663, 664. 

 Thickening layers, primary, 45, 61. 



secondary, 45, 61. 



tertiary, 45, 61. 

 Tissue, complementary. 478, 481, 482. 484. 



definition of, 56, 61, 69. 



diffuse, 56. 



efferent, 283, 284, 285. 300. 



embryonic, see Tissue, meristematic 



false, 62. 



fascicular 1 , 98. 



intermediary, 285 sqq., 300, 349. 



mechanical, see Stereome. 



meristematic, 73. 



permanent, 43, 74. 



stellate, 173, 443. 



ventilating, see Aerenchyma. 



water-conducting, 306 sqq. 

 Tissues, classification of. 69 sqq. 



competition between, 6. 



correlation of, 67, 68. 



origin of, 56. 



