﻿440 
  Index 
  to 
  American 
  botanical 
  literature 
  

  

  Stone, 
  R. 
  E. 
  Upon 
  the 
  audibility 
  of 
  spore 
  discharge 
  in 
  Helvella 
  elas- 
  

  

  tica 
  (Bull.) 
  Trans. 
  Brit. 
  Mycol. 
  Soc. 
  6: 
  294. 
  i 
  Ap 
  1920, 
  

  

  V 
  

  

  w 
  

  

  Stone, 
  R* 
  E. 
  Upon 
  the 
  visibility 
  of 
  spore 
  dissemination 
  in 
  Fomes 
  

   pinicola 
  (Swartz) 
  Fr. 
  Trans. 
  Brit. 
  Mycol. 
  Soc. 
  6: 
  295. 
  I 
  Ap 
  1920. 
  

  

  Stork, 
  H. 
  E. 
  Studies 
  in 
  the 
  genus 
  Taraxacum, 
  Bull. 
  Torrey 
  Club 
  

   47- 
  199-210. 
  pL 
  6, 
  7. 
  3 
  Je 
  1920. 
  

  

  Loss 
  of 
  sexuality 
  in 
  Taraxacum, 
  

  

  Taubenhaus, 
  J. 
  J, 
  Field 
  diseases 
  of 
  the 
  sweet 
  potato 
  In 
  Texas. 
  Texas 
  

   Agr. 
  Exper. 
  Sta. 
  Bull. 
  249: 
  ^-22, 
  f, 
  1-34, 
  S 
  1919. 
  

  

  J 
  ■ 
  

  

  Thaxter, 
  R. 
  New 
  Dimorphomyceteae. 
  Proc. 
  Am. 
  Acad. 
  Arts 
  & 
  

   Sci. 
  55: 
  211-282, 
  My 
  1920. 
  

  

  Polyandromyces 
  gen. 
  nov. 
  and 
  63 
  new 
  species. 
  

  

  Thomas, 
  C. 
  C. 
  Coix 
  smut. 
  Phytopathology 
  10; 
  331-333. 
  1920. 
  

   Trelease, 
  W 
  The 
  survival 
  of 
  the 
  unlike. 
  Science 
  IL 
  61: 
  599-605. 
  

  

  M 
  

  

  J 
  

  

  18 
  Je 
  1920. 
  

  

  Jour. 
  Ecol. 
  8: 
  41-53. 
  pi. 
  i 
  +f 
  

  

  Washburne, 
  J. 
  N. 
  White 
  pine 
  '*flu." 
  Am. 
  For. 
  26: 
  343-345. 
  Je 
  

   1920. 
  

  

  Weston, 
  W. 
  H. 
  Philippine 
  downy 
  mildew 
  of 
  maize. 
  Jour. 
  Agr. 
  

   Research 
  19: 
  97-122. 
  pL 
  A, 
  B 
  + 
  pL 
  18-25, 
  i 
  My 
  1920. 
  

  

  Whipple, 
  O* 
  B- 
  Degeneration 
  in 
  potatoes. 
  Montana 
  Agr. 
  Exp. 
  Sta. 
  

   Bull. 
  130: 
  3-29./. 
  1-16. 
  Ap 
  1919. 
  

  

  White, 
  O- 
  E- 
  The 
  ancient 
  history 
  of 
  plants. 
  Brooklyn 
  Bot. 
  Gard- 
  

   Leafl. 
  VIII. 
  no. 
  3-5: 
  1-8. 
  28 
  Ap 
  1920. 
  

  

  Wiegand, 
  K. 
  M. 
  Ettpatorium 
  piirpureum 
  and 
  its 
  allies. 
  Rhodora 
  22: 
  

  

  57-70. 
  7 
  My 
  1920. 
  

  

  L 
  

   J 
  

  

  Wieland, 
  G. 
  R. 
  DistrllDution 
  and 
  relationships 
  of 
  the 
  cycadeoids. 
  

  

  Am. 
  Jour. 
  Bot. 
  7: 
  154-171- 
  pl- 
  7 
  + 
  f- 
  1-5. 
  20 
  My 
  1920. 
  ' 
  

   Williams, 
  R. 
  O. 
  The 
  palms 
  of 
  the 
  Royal 
  Botanic 
  Gardens 
  and 
  St. 
  

  

  Clair 
  Experiment 
  Station. 
  Trinidad 
  & 
  Jobago 
  Dept. 
  Agr. 
  Bull. 
  

  

  16: 
  226-244. 
  1917. 
  

  

  ■I 
  

  

  Wilson, 
  E. 
  H. 
  Camphor. 
  Cinnamomum 
  Camphora 
  Nees 
  & 
  Eber- 
  

   maier. 
  Jour. 
  Arnold 
  Arboretum 
  i: 
  239-242. 
  Ap 
  1920. 
  

  

  