246 



INDEX 



Scabrous, 178 

 Scale-bork, 140 

 Scalv bud, 169 



bulb (461), 168 

 Scape (576, a), 199 

 Scariose leaf, 177 

 Scarious leaf, 177 

 Scattered leaves, 198 

 Schizocarp (330, 334), 119 

 Scion, 25 

 Sclerotum, 210 

 Scorpioid raceme (434), 202 

 Scouring rushes, 215 

 Scurfy, 177 

 Scutellaria (151) 

 Scutellum (415) 

 Secondary growth in stem, 146 



in superficial structure of root, 

 158 



roots, 145 



stem, 162 

 Secondaries (524, h) 

 Secund branching (434) 



leaves, 155 

 Secundine (241, etc.), 79 

 Sedge leaf (465, B) 

 Sedum, flower of (47) 

 Seed, dissection and examination of, 135 



appendages of (384, etc.), 131 



chapter on, 127 



coats, 129 



figures of (369-415) 



leaves, 132 



method of examination of, 135 



parts of, 128 



\'itality of, 136 

 Seeds, provisions for scattering, 113 

 Seedless plants, 207 

 Sepals, 32 

 Septa, 32 



abortion of (230), 76, 106 



development of new, 106 



of fruit, abortion of, 106 

 Septate, 191 



Septicidal dehiscence (316) 

 Sericeous, 177 

 Series of plants, 219 

 Serrate (533), 187 

 Serrulate (535), 187 

 Sessile leaf (478) 

 Sexual reproduction, 29 

 Sheathing leaf (162) 

 Shrub defined, 165 

 Siccose, 116 

 Sickle-shaped, 182 

 Sicyos anther (139) 

 Sidalcea (149) 

 Sieve bundles in root (422), 142 



tissue, 142 



tubes (422), 142 

 Sigmoid calyx (106), 56 

 Silene, vertical section of flower (72) 

 Silicic (353-357., 121. 125 

 Silique (254), 125 

 Simple fruit, 105 



Simple pistil (219, etc.), 71 



stems, 164 

 Sinapis, androecium of (33) 

 Single and double flowers (59, 60) 

 Sinistrorse (124), 60 

 Sinuate (536), 53, 188 



disk (263) 



perigone (91) 

 Sinuous anther (139), 64 

 Sinus, 32 



Siphocampylos fruit (328) 

 Skunk cabbage inflorescence (585) 

 Sleeping and awakening of flowers, 93 

 Smilax leaf and tendril (565), 167 

 Solanum (92), 220 

 Solidago leaf (478, 496, 502) 

 Sohd bulb, 168 

 Sophora fruit (352), 124 

 Sori, 217 



Spadix (585, 586), 202 

 Spathe (585), 205 

 Spathyema inflorescence (585) 

 Spatulate (503), 181 

 Species of plants, number of, 219 

 Specific name, 222 

 Spermatophyta, 219 

 Spigelia (97) 

 Spike (583), 202 

 Spikelet (347, 589), 123, 206 

 Spines (453), 165 



becoming branches (454) 

 Spinulose teeth, 188 

 Spiral leaf arrangement (571), 190 

 Sporangium, 30 

 Spore germination in cryptogams, 101 



mother cells, 65 

 Sporophyll, 30 

 Sporophyte, 30 

 Spur (65), 58 

 Squash androecium (148) 

 Staeha fruit (326) 

 Stamen-circle, the single, 43 



column, 46, 66 



parts of (12, 14), 31 

 Staminate flower (12), 30 

 Staminodia (38, 44), 62 

 Standard (110), 57 

 Stele, 141 



differentiation of its cells (421) 



secondarv growth in, 142 

 Stellaria flower (39, 40) 

 Stem and root structure, chapter on, 136 



composition of, 26 



extensions and appendages of, chap- 

 ter on, 153 



structure compared with root struc- 

 ture, 145 

 nionocotyledonous (424) 

 Stems and roots classified, chapter on, 

 158 



classification of, 161 



duration of, 161 



order of development, 162 



subterranean (444-452), 162 

 Sterile filament on anther, 62 



