INDEX. 
590 
Sorosis, 235. 241. 
Spadiceus, 478. 
Spadix, 155. 158. 
Span, 474. 
Sparsus, 492. 
Spathe, 148. 
Spathella, 150. 
Spatulate, 456. 
Specific characters, 526. 
Spermaphorum, 194. 
Spermatocystidia, 266. 269. 
Spermatocystidium, 175. 
Spermatic animalcules, 270. 558. 
Spermidium, 236. 
Spermodermis, 244. 
Sphaerenchyma, 7. 
Sphaericus, 446. 
Sphagnum pores, 547. 
Sphalerocarpium, 235. 241. 
Spheroidal, 448. 
Spherula, 275. 
Spiculate, 469. 
Spike, 154. 158, 159. 
■' -, compound, 159. 
Spikelet, 149. 155. 
Spilus, 247. 
Spindle-shaped, 448. 
Spine, 74. 
Spines, 64. 69. 
of leaves, 142. 
Spiny, 468. 
Spiral, 175. 447. 487. *493. 
arrangement of parts, 113. 
vessels, *27. 107. 299. 
, compound, 30. 
, in roots and seeds, 547. 
, simple, 30. 
Spiraliter contorta, 485. 
Spithama, 474. 
Spithamaeus, 474. 
Splendens, 471. 
Split, 461. 
Spodo-, 477. 
Spongelet, 109. 
Spongiolag seminales, 67. 
Spongiole, 109. 
Spongy, 472. 
Spontaneous movement, 411. 
Sporag, 273. 
Sporangia, 260. 262. 264. 274. 
Sporangidium, 267. 
Sporangiola, 275. 
Sporangium, 266. 268. 275. 
Spores, 260. 
Sporidia, 273. 276. 
Sporocarpia, 263. 
Sporocarpium, 264. 268. 
Sporules, 260. 266. 
Spotted, 481. 
Spreading, 134. 488. 
Spur, 169. 
Spuria, 1 20. 
Spurs, 283. 
Squama, 148. 
Squamellus, 148. 
Squamulae, 149. 
Squamosag, 261. 
Squainosus, 63. 470. 493. 
Squarrose, 493. 
slashed, 461. 
Squarroso-laciniatus, 461. 
Stalklets, 138, 139. 
Stamens, 151. *171, 172. 515. 
, sterile, 181. 
Staminidia, 266. 269. 
Standard, 1 68. 
Starch, 380. 557, 558, 559. 
Starry, 60. 
Starved, 493. 
Stellate, 60. *466. 491. 
Stelliformis, 491. 
Stellulatus, 491. 
Stem, 69. *84. 309. 515. 
, aerial, 80. 82. 
, creeping, 82. 
, determinate, 73. 
, external modifications of the, 80. 
, indeterminate, 73. 
, internal modifications of the, 85 . 
, parts of the, 70. 
, subterranean, 80. 
, virgate, 72. 
Stem-clasping, 489. 
Stemless, 85. 
Stephanoum, 240. 
Sterigmata, 120. 
Sterigmum, 237. 
Stigma, 193. 196. 516. 
Stimulans, 60. 
Stimuli, 60. 
Stinging, 470. 
Stings, 60. 
Stipels, 144. 
Stipes, 70. 260. 274. 
Stipitate, 490. 
Stipulee, 268. 515. 
Stipules, 143. 
Stole, 83, 84. 
Stoma, 57. 
Stomates, *51. 123. 279. 558. 
, numerical proportions of, 
on various surfaces, 56. 
Stomatia, 51. 
Stone, 236. 
Stool, 84. 
Straggling, 488. 
Stragulum, 149. 
Straiglit, 485. 
Straight-ribbed, 482. 
Straight-\eined, 132, 133. 
