﻿366 
  

  

  INTRODUCTION 
  TO 
  BOTANY 
  

  

  Russian 
  thistle, 
  167, 
  108 
  

   K 
  ust.s, 
  *253-256 
  

  

  Sac 
  fungi, 
  *242-247 
  

  

  Saccharomycetes, 
  201 
  

  

  Sachs, 
  Julius, 
  56* 
  

  

  Sap, 
  24 
  

  

  Saprophytes, 
  48, 
  *50~52, 
  234 
  

  

  Saprnphytic 
  bacteria, 
  203, 
  204 
  

  

  Saprophytism, 
  48, 
  51, 
  52 
  

  

  Sapwood, 
  60 
  

  

  Sargasso 
  Sea, 
  231 
  

  

  Sargassuni, 
  231, 
  260 
  

  

  Sassafras 
  wood, 
  section 
  of, 
  110* 
  

  

  Sehizomycetes, 
  200 
  

  

  Scion, 
  92* 
  

  

  Sclerenchyma, 
  285* 
  

  

  Sclerotinia, 
  242*, 
  201 
  

  

  Scouring 
  rush, 
  278*, 
  279 
  

  

  Scramblers, 
  74 
  

  

  Scutellnm, 
  16 
  

  

  Seed, 
  15-18, 
  *157-171, 
  303 
  

  

  Seed 
  coats, 
  158*, 
  160 
  

  

  Seed 
  distribution, 
  *166-171 
  

  

  Seed 
  leaf, 
  18*, 
  158* 
  

  

  Seed 
  plants, 
  *282-307 
  

  

  Seed 
  testing, 
  163 
  

  

  Seedlings, 
  18*, 
  *159-165 
  

  

  Seedlings, 
  mutilated, 
  irrowth 
  of, 
  105* 
  

  

  Seedlings, 
  types 
  of, 
  18*, 
  159*, 
  160* 
  

  

  Selection 
  by 
  plant 
  breeder, 
  175, 
  177, 
  

  

  * 
  178-1 
  86, 
  191 
  

  

  Self-pollination, 
  139, 
  *140-142 
  

   Self-pruning, 
  77, 
  78 
  

   Sepal, 
  14*, 
  120* 
  

   Sequoia, 
  24, 
  287*, 
  294 
  

   Sexual 
  reproduction 
  in 
  angiosperms, 
  

  

  *135-137, 
  *298-303 
  

   Sexual 
  spore, 
  225 
  

   Shepherd's-purse, 
  ovule 
  and 
  embryo, 
  

  

  303* 
  

  

  Shoot, 
  56 
  

  

  Sieve 
  tubes, 
  20*, 
  43, 
  63* 
  

   Simple 
  pistil, 
  131 
  

   Sisal, 
  313 
  

   Smuts, 
  *25 
  1-253 
  

   Soft 
  bast. 
  See 
  sieve 
  tubes 
  

   Soil, 
  26, 
  39, 
  *319-327 
  

   Soil, 
  ivlatiun 
  of 
  roots 
  to, 
  26, 
  27, 
  324* 
  

   Soil 
  bacteria, 
  *204-207, 
  323 
  

   Soil 
  fertility, 
  323-325 
  

   Sorrel, 
  334* 
  

   Sorus, 
  273 
  

  

  Spanish 
  moss, 
  49, 
  60* 
  

   Species, 
  194-196 
  

  

  Sperm, 
  228, 
  265*, 
  275* 
  

   Spennatophytes, 
  ino, 
  306 
  

   Spermatophytes, 
  evolution 
  (if 
  plants, 
  

   300 
  

  

  Sphagnum, 
  207*, 
  208 
  

  

  Spin.gyra, 
  223, 
  224*, 
  225, 
  239. 
  200 
  

  

  Spongy 
  parenchyma 
  of 
  leaf, 
  30* 
  

  

  Sporangium, 
  272*-274 
  

  

  Spore. 
  i'(i:;. 
  224*, 
  227*, 
  228* 
  

  

  Sporidia, 
  225* 
  

  

  Spon.phyll. 
  ^78*, 
  2!K), 
  291*, 
  299 
  

  

  Spornphyte, 
  200 
  

  

  Sport, 
  173 
  

  

  Spraying, 
  240*, 
  241, 
  318, 
  319 
  

  

  Sprenuel. 
  138 
  

  

  Spruce, 
  293* 
  

  

  Spur, 
  fruit, 
  98, 
  99* 
  

  

  Squash 
  seed, 
  section 
  of, 
  158* 
  

  

  Stamen, 
  14*, 
  15, 
  *125~130 
  

  

  Staminate 
  riower, 
  127* 
  

  

  Starch. 
  7, 
  14, 
  17, 
  40*, 
  43, 
  343, 
  344 
  

  

  Starch-making, 
  38-40, 
  34:;. 
  341 
  

  

  Stern, 
  dicotyledonous, 
  minute 
  struc 
  

  

  ture 
  of, 
  *02-65 
  

   Stem, 
  functions 
  of, 
  12, 
  50-60 
  

   Stem, 
  monocotyledonous, 
  08*. 
  09 
  

   Stem, 
  rate 
  of 
  growth 
  of, 
  00, 
  01. 
  288 
  

   Stem, 
  structure 
  of, 
  11*, 
  12*, 
  *02-08 
  

   Steins, 
  climbing, 
  74. 
  75 
  

   Steins, 
  underground, 
  *86-88 
  

   Sterilization, 
  194, 
  195 
  

   Stit'l'euini:. 
  mechanics 
  for, 
  *62~65 
  

   Stigma, 
  131*, 
  300,301* 
  

   Stimulus, 
  22 
  

   Stipe. 
  257 
  

   Stipules. 
  09*, 
  101 
  

   Stock. 
  92* 
  

   Stolon, 
  89*, 
  90 
  

   Stomata, 
  35*. 
  30* 
  

   Slonewort, 
  229* 
  

   Storage 
  of 
  food 
  in 
  root, 
  44*, 
  45 
  

   Storage 
  of 
  food 
  in 
  seed, 
  17*, 
  105, 
  

  

  166 
  

  

  Storage 
  of 
  food 
  in 
  stem. 
  *87-89 
  

   Strengthening 
  tissue, 
  11, 
  04*, 
  65 
  

   Struggle 
  for 
  existence, 
  *107-172 
  

   Style.' 
  300 
  

  

  Submerged 
  leaves, 
  79* 
  

   Sugar, 
  7, 
  38, 
  *309-312 
  

   Sugar, 
  formed 
  during 
  germination, 
  

  

  Kir,, 
  100 
  

   Sugar 
  beet, 
  312 
  

   Sugar 
  cane, 
  311*, 
  312 
  

   Sugar 
  maple, 
  309, 
  310* 
  

   Sugar 
  pine, 
  295* 
  

  

  