﻿230 
  

  

  Index 
  to 
  American 
  botanical 
  literature 
  

  

  Woodbum, 
  W. 
  L.^ 
  Preliminary 
  notes 
  on 
  the 
  embryology 
  of 
  Reboiilia 
  

   hemisphaerica. 
  Bull. 
  Torrey 
  Club 
  46; 
  461-464. 
  pL 
  ig. 
  31 
  D 
  1919. 
  

  

  Woodward, 
  R. 
  W. 
  Further 
  notes 
  on 
  Philotria. 
  Rhodora 
  21: 
  218-219. 
  

   8 
  Ja 
  1920. 
  • 
  

  

  Woodworth, 
  C. 
  M. 
  The 
  application 
  of 
  the 
  principles 
  of 
  breeding 
  to 
  

   drug 
  plants, 
  particularly 
  Datura. 
  Bull. 
  Univ. 
  Wisconsin 
  1005: 
  I- 
  

  

  

  2. 
  /. 
  7-75. 
  N 
  1919. 
  

  

  Yampolsky, 
  C. 
  The 
  occurrence 
  and 
  inheritance 
  of 
  sex 
  intergradation 
  

   in 
  plants. 
  Am. 
  Jour. 
  Bot. 
  7: 
  21-38. 
  25 
  F 
  1920. 
  

  

  Yampolsky, 
  C. 
  Inheritance 
  of 
  sex 
  in 
  Mercuralis 
  aftfttia. 
  Am. 
  

   Jour. 
  Bot. 
  6: 
  410-442. 
  pL 
  37-40 
  +f.i. 
  7 
  Ja 
  1920. 
  

  

  Yates, 
  H. 
  S. 
  The 
  growth 
  of 
  Hevea 
  hrasiliensis 
  in 
  the 
  Philippine 
  

  

  A 
  

  

  Islands. 
  Philip. 
  Jour. 
  Sci. 
  14: 
  501-523. 
  My 
  1919. 
  

   Youngken, 
  H. 
  W. 
  Notes 
  on 
  the 
  dasheen 
  and 
  chayote. 
  Am. 
  

  

  : 
  380-386. 
  /. 
  

  

  M.. 
  & 
  Schmi 
  

  

  Am. 
  Jo 
  

   18 
  D 
  1919. 
  

  

  Studies 
  in 
  the 
  physiology 
  of 
  the 
  fungi 
  

  

  VIIL 
  Mixed 
  cultures. 
  Ann. 
  Missouri 
  Bot- 
  Gard. 
  6; 
  183-192. 
  

   pL 
  4, 
  II 
  1919. 
  

  

  Zimmerman, 
  H. 
  E. 
  Tomato 
  grafted 
  on 
  potato. 
  Am. 
  Bot. 
  25: 
  145. 
  

   N 
  1919. 
  [Illust.] 
  

  

  