﻿552 
  Index 
  to 
  Aj^erican 
  botanical 
  literature 
  

  

  Hurd, 
  A. 
  M. 
  Effect 
  of 
  unilateral 
  monochromatic 
  light 
  and 
  group 
  

   orientation 
  on 
  the 
  polarity 
  of 
  germinating 
  Fucus 
  spores. 
  Bot. 
  

   Gaz. 
  70: 
  25-50./. 
  1-2. 
  24 
  Jl 
  1920. 
  

  

  Jennings, 
  O. 
  E. 
  Impatiens 
  pallida 
  forma 
  speciosa 
  L 
  nov- 
  Ohio 
  Jour. 
  

  

  Sci. 
  20: 
  204. 
  Ap 
  1920. 
  

  

  Kidder 
  

  

  Rhodora 
  22: 
  77-78. 
  18 
  J 
  

  

  f< 
  

  

  Knowlton, 
  C. 
  H., 
  Ripley, 
  W. 
  S., 
  & 
  Weatherby, 
  C, 
  A. 
  Second 
  report 
  of 
  

  

  the 
  committee 
  on 
  floral 
  areas. 
  Rhodora 
  22: 
  80-89. 
  18 
  Je 
  1920. 
  

  

  Considers 
  Polypodiaceae, 
  Schizaeaceae 
  and 
  Osmundaceae 
  of 
  New 
  England. 
  

  

  Koehne, 
  E. 
  Eine 
  neue 
  Robinie. 
  Mitteil. 
  Deutsch. 
  Dendr. 
  Ges. 
  22: 
  

   1-3- 
  1913. 
  

  

  Robinia 
  Hariwigii, 
  sp. 
  nov. 
  

  

  Lewis, 
  F. 
  J., 
  & 
  Turtle, 
  G. 
  M. 
  Osmotic 
  properties 
  of 
  some 
  plant 
  cells 
  

  

  at 
  low 
  temperatures. 
  

  

  /•J-J. 
  JI 
  

  

  M 
  

  

  Las 
  Asclepiadaceas 
  Argentlnas. 
  Rev. 
  Soc. 
  Argentina 
  Ci. 
  

  

  0-437. 
  31 
  D 
  1919. 
  

  

  Includes 
  Hickenia, 
  gen. 
  nov., 
  and 
  9 
  new 
  species. 
  

  

  Livingston, 
  B. 
  E., 
  & 
  Koketsu, 
  R. 
  The 
  water-supplying 
  power 
  of 
  the 
  

   soil 
  as 
  related 
  to 
  the 
  wilting 
  of 
  plants. 
  Soil 
  Sci. 
  9: 
  469-485. 
  Je 
  

  

  1920. 
  

  

  Pring, 
  G. 
  H, 
  Curiosities 
  of 
  plant 
  life. 
  J 
  

  

  Card. 
  Club 
  3: 
  165-177, 
  303-315, 
  627-642. 
  1919. 
  [Illust.] 
  , 
  

   MacDougal, 
  D. 
  T. 
  The 
  physical 
  factors 
  in 
  the 
  growth 
  of 
  the 
  tomato. 
  

   Bull. 
  Torrey 
  Club 
  47: 
  261-269. 
  23 
  Je 
  1920. 
  

  

  MacDougal, 
  D. 
  T., 
  & 
  Spoehr, 
  H. 
  A; 
  The 
  components 
  and 
  colloidal 
  

  

  behavior 
  of 
  plant 
  protoplasm. 
  Proc. 
  Am. 
  Phil. 
  Soc. 
  50: 
  

  

  o-i 
  

  

  1920. 
  

   Macmillan 
  

  

  H. 
  G., 
  & 
  Byars, 
  L. 
  P. 
  Heat 
  injury 
  to 
  beans 
  in 
  Colorado, 
  

   rnytopathology 
  10: 
  365-367-/. 
  i. 
  18 
  Au 
  1920. 
  

   Martin, 
  W. 
  H. 
  The 
  relation 
  of 
  sulfur 
  to 
  soil 
  acidity 
  and 
  to 
  the 
  pro- 
  

   duction 
  of 
  potato 
  scab. 
  Soil 
  Sci. 
  9: 
  393-408. 
  /. 
  1-5. 
  Je 
  1920. 
  

  

  D. 
  Camphorina 
  vs. 
  Cinnamomum. 
  Bot. 
  Gaz. 
  70: 
  84-85- 
  

  

  MerriU 
  

  

  JI 
  

  

  Moxley, 
  G. 
  L. 
  Notes, 
  chiefly 
  nomenclatorial, 
  on 
  Southern 
  California 
  

   ferns. 
  Bull. 
  S. 
  Calif. 
  Acad. 
  Sci. 
  19: 
  5^57. 
  Jl 
  1920. 
  

  

  Includes 
  two 
  new 
  combinations 
  in 
  Thelypteris. 
  

  

  Norton, 
  J. 
  B. 
  S., 
  & 
  Chen, 
  C. 
  C. 
  Some 
  methods 
  for 
  investigating 
  inter- 
  

   nal 
  seed 
  infection. 
  Phytopathology 
  10: 
  399-400. 
  2 
  S 
  1920. 
  

  

  