G16 



INDEX. 



Selaginellaceae, 231. 

 Selaginellese, 20-5, 223. 

 Selago, 541. 

 Selenastrum, 51. 

 Selenipedilum, 329, 330. 

 Seligeria, 196. 

 Seligeriaceas, 196. 

 Semele, 316. 

 Sempervivurn, 151, 451, 



452. 



Senebiera, 400, 401. 

 Senecio, 566, 569, 572, 



573. 



Senecionese, 572. 

 Seriua, 468. 

 Sepals, 235. 

 Sequoia, 267, 272. 

 Serapias, 332. 

 Serjania, 441. 

 Serratula, 570, 574. 

 Serum, 33. 

 Service-tree, 465. 

 Sesamum, 529. 

 Seseli, 495. 

 Seselinese. 495. 

 Sesleria, 294. 

 Sesuvium, 375. 

 Seta, 186. 

 Setaria, 295. 

 Sexual reproduction, 11. 

 Sheep-seaweed, 84. 

 Shellac, 356, 434. 

 Shepherdia, 450. 

 Shepherd's-needle, 495. 

 Shepherd's-purse, 401. 

 Sherardia, 552. 

 " Sichel," 284. 

 " Sickle," 284. 

 Sicyos, 481. 

 Sida, 428, 430. 

 Sideritis, 538. 

 Sideroxylon, 511. 

 Sigillariaceae, 233. 

 Silaus, 495. 

 Sileuea3, 367. 

 Sileue, 367. 

 Siler, 495. 

 Siliceous earth, 20. 

 Siliculosae angustiseptse, 



401. 



latiseptse, 400. 

 Siliqua, 398. 

 Siliquosae, 402. 

 Silk-cotton, 427. 

 Silphium, 498, 572. 

 Silver-leaf, 450 

 Silybum, 567, 570. 

 Simaba, 439. 

 Simaruba, 439. 

 Sirnarubaceas, 438. 

 Sinapeai, 404. 



Sinapis, 400, 402. 

 Siphocampylos, 563. 

 Siphoueae, 4, 9, 47, 59. 

 Siphonia, 434. 

 Siphonocladus, 62. 

 Sirosiphoniaceaj, 22, 24, ' 



26. 



Sisal hemp, 318. 

 Sisymbriinffi, 404. 

 Sisymbriurn, 399, 402, 



410. 



Sisyrinchiurn, 321. 

 Sium, 494, 498. 

 Skimmia, 437. 

 Skull-cap, 539. 

 Slime-fungi, 1, 4, 5. 

 Sloe, 461, 462. 

 Sloth, 8, 356. 

 Smilaceas, 316. 

 Smilacina, 314. 

 Srnilax, 315, 316. 

 " Smut," 113, 130. 

 Smut-fungi, 114. 

 Snake cucumber, 481. 

 Snapdragon, 523, 524. 

 Snowberry, 554. 

 Snowdrop, 317. 

 Soapwort, 368. 

 Soft-grass, 296. 

 Soja, 471. 

 Solanaceae, 514, 518, 520, 



522. 



Solanine, 522. 

 Solanum, 238, 521, 522. 

 Soldauella, 513. 

 Solenia, 162. 

 Solidago, 573. 

 Sollya, 455. 

 Solomon's seal, 314. 

 Sonchus, 153, 571. 

 Sophora, 469. 

 Sophorese, 469. 

 Sorbus, 152, 465. 

 Sordaria, 129. 

 Sordariacese, 12^. 

 Soredia, 141. 

 Sorghum, 296. 

 Sori, 205. 

 Sorocea. 356. 

 Sorrel, 361. 

 Southernwood. 574. 

 Sow-thistle, 571. 

 Spadiciflorre, 277, 297. 

 Spadix, 297. 

 Sparassis,161. 

 Sparaxis, 321. 

 Spargauium, 302, 303. 

 Sparmaunia, 425. 

 Spartium, 472. 

 Spathe, 297. 

 Spathicarpa, 306. 



Spathulea, 137. 

 Spearmint, 541. 

 Specularia, 562. 

 Speedwell, 525. 

 Spergula, 366. 

 Spergularia, 366. 

 Sperrnacoce, 550. 

 Spermacoceas, 550. 

 Spermagonia, 116. 

 Spermaphyta, 3. 

 Sperrnatangia, 81. 

 Spermatia, 13, 76, 77, 



141,146. 



Sperrnatochnacese, 71. 

 Spermatochnns, 71. 

 Spermatozoid, 13, 183. 

 Sperm-nucleus, 245. 

 Spermocarp, 58. 

 Spermogonia, 89, 141, 



146, 147, 149. 

 Spermothamniou, 84. 

 Sphacelaria, 70. 

 Sphacelariacese, 70. 

 Sphacelia, 125, 126. 

 Sphacelotheca. 110. 

 Sphaeralcea, 430. 

 Sphserella, 48, 130. 

 Spbserellacea?, 130. 

 Sphffiriales, 129. 

 Sphserobolaceffi, 173. 

 Sphasrobolus, 173. 

 Sphserocarpus, 191, 192. 

 Sphasrococcaceae, 83. 

 Sphasrophorus, 142. 

 Spha^roplea, 13, 14, 58. 

 Sphaeropleaceffi, 47, 58. 

 Sphserotheca, 120, 121. 

 Sphffirozosma, 44. 

 Sphagnese, 193 

 Sphagnum, 186, 188, 192, 



194, 195, 197. 

 Sphenogyne, 566. 

 Sphenophyllaceas, 233. 

 Sphinctrina, 140. 

 Spigelia, 546. 

 Spikelet, 285, 287, 289. 

 Spikes, 285. 

 Spilanthes, 572. 

 Spinach, 371. 

 Spinacia, 371, 372. 

 Spindle-tree, 444. 

 Spirsea, 151, 451, 456. 



457, 460. 

 Spiraeas, 457. 

 Spiranthes, 331. 

 Spirilla, 27. 

 Spirillum, 30. 

 Spirochsetse, 27. 

 Spirochfete, 28, 38, 40. 

 Spirodela, 307. 

 Spirogyra, 44, 45. 



