INDEX. 



341 



Root-sprovits, 22. 

 Rosa Bglanteria, 314. 



gallica, 315. 

 Rosaoese, 98, 99. 

 Rubus Idasus integrifolius, 312, 

 Rumex, 77, 100. 

 Rumex Acetosella, 22. 

 Rutacese, 80, 99. 

 Salvia, 90. 

 Salix, 53, 101. 

 Saprolegnia, 252, 268, 298. 



capitulifera, 188, 269. 



ferax, 185. 

 Sarcooocca, 36. 

 Soenedesmus, 250. 

 Soliizoclilamys, 181, 230. 

 Schizonema, 139, 286. 

 Scliizosi]ihon, 147, 178. 

 Sciadium, 187, 209, 260. 

 ScrophularinesB, 33, 90, 98. 

 Scutellaria, 90. 

 Scytonema, 147, 178, 186. 

 Scytoiiema;, 146, 178. 

 Seed-cells v. Spores. 

 Sepals, 64, 92. 

 Series of generations, 32. 

 Sesleria, 87. 

 Sirogonium, 288. 

 Skinning of cells, 180, 188. 

 Slipping out of cells, 182, 231. 



imperfect, 187. 

 SolanaceEe, 98. 



Solanum tuberosum, 30, 37, 53. 

 Solidago, 30. 

 Spermosira, 146. 

 Sphseroplea, 164, 271, 281. 

 Sphserozyga, 146. 

 Spirogyra, 135, 175, 180, 196, 201, 



224, 239, 241, 281, 289. 

 lubrica, 244. 

 mirabills, 300. 

 Spores, 134, 164. 

 Sprout-formation, 21. 



relative to character, 38. 



to economy, 38, 41. 

 Stamens, 64. 

 Starch-grains, 198, 206. 



solution of, 195, 197. 

 Staurocarpus, 134, 281, 296. 

 Stauroceras, 287. 

 Staurospermum v. Staurocarpus. 

 Stellaria media, 95, 98, 99. 

 Stem-formation, 108, 110. 

 Stigeoclonium, 139, 156, 163, 183, 

 208, 224. 



Strengthening generations, 29, 43. 

 Strutniopteris, 108. 

 Sustaining sprout, 37. 

 Swarm-cells v. gonidia. 

 Swarming out of cells, 383. 

 Syzjgites, 290. 

 Tamarix, 40, 98. 

 Tanacetum, 30. 

 Terminal bud, 53. 

 Tetmemorus, 291. 

 Tetrachoeoccus, 258. 

 Tetraspora, 132, 209. 

 Tetraspores, 255. 

 Thesium, 90. 

 Thuja, 40. 

 Thylls, 253. 

 Tilia, 45, 53, 100. 

 Tiliaoeai, 94. 



Tolpothrix, 147, 186. [257. 



Tradescaatia (Pollen-formation of). 

 Transformation of pistils into sta- 

 mens, 97. [278. 

 Transitory Cell, in the embryo-sac, 

 Trifolium montanum, 33. 

 Triticum, 40^ 

 Tropseolum, 31, 39. 

 Tuhp, 18, 26, 56, 68, 313. 

 Ulothrix, 125, 156, 159, 175, 200. 



zonata, 148, 184, 208, 223. 



Braunii, 177, 183, 208, 250. 

 Ulva, 125, 184, 250. 

 Unicellular plants, 124. 

 Urococcus, 178, 230. 

 Valeriana officinalis, 69. 

 Valonia, 180, 273. 

 Vaucheria, 128, 140, 157, 163, 174, 

 183,209,212,221,251. 

 conjugation of, 296. 

 Veratrum, 68. 

 Veronica Chamsedrys, 59. 

 Vesicle, chlorophyll, 199. 

 Vesicles, germinal, 167, 275. 

 Vinca minor, 314. 

 Vines v. Vitis. 

 Vitis, 46. 



vitifera laciniosa, 312, 315. 

 Volvocinese, 158, 208, 216, 250. 



eve of, 209. 

 Volvox, 159.' 

 Willow, V. Salix. 

 Zonaria Pavonia, 179, 248. 

 Zygnema, 175, 288. 

 Zygnemacese, 133, 135, 164, 174, 

 Zygogonium, 288. [180, 287. 



ericetorum, 177. 



