INDEX AND GLOSSARY 



353 



Sedges, phyllotaxy, 49. 



Seed: a reproductive body containing an 

 embryo plant, 5. 



Seed, coats, 164; starch in, 31; dispersal, 

 158; -variations, 228, 



Selection, 231. 



Self-fertilization : secured by pollen from 

 same flower; close-fertilization, (260). 



Self-heal, 327. 



Self-pollination: transfer of pollen from 

 stamen to pistil of same flower; close- 

 pollination, (263). 



Sepal: one of the separate leaves of a 

 calyx, (251). 



Septicidal: dehiscence along the parti- 

 tions, (292). 



Serrate: saw-toothed, (200). 



Sessile: not stalked, (195). 



Shade and leaves, 98; and plants, 215. 



Shadows in trees, 61. 



Sharon, Rose of, 313. 



Sheep and plants, 224. 



Sheepberry, 334, Fig. 279. 



Sheep sorrel, 305, Fig. 453. 



Shepherdia, hairs, 270. 



Shepherd's purse capsule, 152, 311, Fig. 



Sieve tissue, 254. [259. 



Silic'e: short fruit of Cruciferae, (293). 



Silique: long fruit of Cruciferae, (293). 



Silphium, 50. 



Simple pistil: of one carpel, (255). 



Sinistrorse; left-handed, (231). 



Skunk cabbage, 141, 225, 250, 290. 



Sleep of leaves, 50. 



Slips, 24. 



Smartweed, 125, 136, 148, 305, 306. 



Smilacina racemosa, 294; stellata, 294. 



Smilax of florists, 103, 294, Fig. 434. 



Smilax tendril, 111. 



Snapdragon, 137, 332, Fig. 220. 



Snowball, 145, Figs. 236, 237, 334. 



Snowberry, Fig. 260. 



Snowdrop, 296, Fig. 436. 



Snowflake. 296. 



Soapberry family, 315. 



Soapwort, 307. 



Societies, 219. 



Softwood cutting, 24. 



Soil and plants, 200; and variation, 206; 

 holds moisture, 70; water from, 64. 



Solanum, 108, 330, Figs. 42, 219, 261. 



Solidago, 339. 



Solitary flowers, 115. 



Solomon's seal, 294; false, 294. 



Soredia, 186. 



Sori, 172, 184. 



Sorrel, 305, Fig. 453. 



Spadix: thick or fleshy spike of certain 

 plants, (280). 



Spanish bayonet, 162; moss, 88. 



Spathe: bract surrounding or attending 

 a spadix, (280), 141. 



Spatulate, 94. 



Spearmint, 327, Fig. 484. 



Species, 275. 



Spencer, quoted, 231. 



Spermatozoids, 190. 



Sperm-cell, 180. 



Spiderwort, 235. 



Spike: compact more or less simple, in- 

 determinate cluster, with flowers ses- 

 sile or nearly so, (238), Figs. 174, 175. 



Spikelet: a secondary spike; one of a 

 compound spike, 146: 



Spikenard, false, 294. 



Spines, 104, 105. 



Spirea inflorescence, 117, Fig. 179. 



Spirogyra, 178, 233, 234, Fig. 313, 314. 



Spleenwort, 286. 



Sporangia of ferns, 172; stamens, 124. 



Sporangiophore, 181. 



Spore: a simple reproductive body, usu- 

 ally composed of a single detached cell, 

 containing no embryo, 5, 86, 172, 180. 



Spore-case, 172. 



Sporogonium, 188. 



Sporophyll, 176. 



Sporophyte, 174, 194. 



Spruce, 15, 288, Figs. 270, 271, 424. 



Spruce cone, Fig 271; seed, Fig. 155. 



Squash fruit, 155, Fig. 269; germination, 

 171; Guinea, 330, Fig. 261; hairs, 105, 

 235; roots, 268. 



Squirrels and birds, 47, 162. 



Stains, 241. 



Stamen: pollen-bearing organ, (253). 



Staminate: having stamens and no pis- 

 tils, (257). 



Stand, dissecting, 127, Fig. 201, 



Starch and sugar, 246; as plant-food, 64; 

 discussed, 247-249; how made, 77, 78; 

 storage of, 31. 



Steeple, compared with plants, 18 



Stellaria media, 308, Fig. 457. 



