﻿J 
  

  

  586 
  Index 
  to 
  American 
  botanical 
  literature 
  

  

  Free, 
  M. 
  Things 
  and 
  thoughts 
  of 
  the 
  garden. 
  Gard. 
  Chron. 
  24: 
  

  

  303-304- 
  S 
  1920. 
  

   Freeman, 
  G. 
  F. 
  Studies 
  in 
  evaporation 
  and 
  transpiration. 
  Bot. 
  Gaz, 
  

  

  70: 
  190-210./. 
  1-5, 
  15 
  S 
  1920^ 
  

  

  Graves, 
  E. 
  W. 
  The 
  fern 
  flora 
  of 
  Alabama. 
  Am. 
  Fern. 
  Jour. 
  10 
  : 
  65-82. 
  

   pL 
  I. 
  1920. 
  

  

  Hansen, 
  A. 
  A. 
  Cocklebur. 
  U. 
  S. 
  Dept.'Agr. 
  Circ. 
  109: 
  3-6. 
  JI 
  1920. 
  

  

  Harper, 
  R. 
  M. 
  Resources 
  of 
  southern 
  Alabama. 
  Alabama 
  GeoL 
  

   Survey. 
  11 
  : 
  9-139. 
  Jl 
  1920, 
  

  

  Harper, 
  R. 
  M. 
  Southern 
  Louisiana 
  from 
  the 
  car-window. 
  Torreya 
  

   20: 
  67-76. 
  20 
  S 
  1920. 
  

  

  Harshberger, 
  J. 
  W. 
  The 
  old 
  gardens 
  of 
  Pennsylvania 
  I. 
  Bartram 
  

   Arboretum 
  and 
  Park. 
  Gard. 
  Mag, 
  32: 
  78-80. 
  O 
  1920. 
  [Illust.] 
  

  

  Henriquez, 
  J. 
  A. 
  El 
  arroz. 
  Revista 
  Agric. 
  Puerto 
  Rico 
  5^: 
  14-19. 
  

  

  w 
  

  

  Au 
  1920. 
  

  

  Higgins, 
  J. 
  E. 
  Report 
  of 
  the 
  horticultural 
  division. 
  Hawaii 
  Agr* 
  

   Exper. 
  Sta. 
  Rep. 
  1919: 
  16-40. 
  pL 
  1-2, 
  10 
  S 
  1920. 
  

  

  Hollick, 
  A. 
  Qiierciis 
  licterophylla 
  in 
  the 
  Clove 
  Valley. 
  Proc. 
  Staten 
  

   Island 
  Assoc. 
  Arts 
  & 
  Sci. 
  7: 
  32-34. 
  pi. 
  4. 
  21 
  Je 
  1920. 
  

  

  Holm, 
  T. 
  Antennaria 
  alpina 
  and 
  A, 
  carpathica. 
  Rhodora 
  22: 
  138- 
  

   142. 
  23 
  S 
  1920. 
  

  

  House, 
  H. 
  D. 
  The 
  genus 
  Aetopteron, 
  Ehrhart. 
  Am. 
  Fern. 
  Jour. 
  10: 
  

  

  + 
  

  

  88, 
  89. 
  1920. 
  

  

  Contains 
  8 
  new 
  combinations. 
  

  

  A. 
  Algae, 
  in 
  Britton, 
  N. 
  L., 
  The 
  Bahama 
  Flora 
  553-631. 
  

  

  M 
  

  

  26 
  Je 
  1920. 
  

  

  Includes 
  16 
  new 
  species. 
  

  

  Howe, 
  M. 
  A. 
  Ricciaceae, 
  in 
  Britton, 
  N. 
  L., 
  The 
  Bahama 
  Flora 
  502- 
  

   503. 
  26 
  Je 
  1920. 
  

  

  Johnson, 
  E. 
  Seed 
  production 
  of 
  the 
  Canada 
  thistle 
  in 
  southern 
  

  

  California. 
  

  

  /. 
  p5. 
  Au 
  1920. 
  

  

  Jolinson, 
  E. 
  The 
  spread 
  of 
  the 
  puncture 
  vine 
  in 
  California. 
  California 
  

   Dept. 
  Agr. 
  Mo. 
  Bull. 
  9: 
  330-332./. 
  92-93. 
  Au 
  1920. 
  

  

  Jones, 
  D. 
  H. 
  Further 
  studies 
  on 
  the 
  growth 
  cycle 
  of 
  Azotohacler. 
  

  

  Jour. 
  Bact. 
  5: 
  325-333- 
  pl- 
  ^'4^ 
  Jl 
  1920. 
  

   Kelly, 
  J. 
  P. 
  A 
  genetical 
  study 
  of 
  flower 
  form 
  and 
  flower 
  color 
  in 
  

  

  PJilox 
  DrummondiL 
  Genetics 
  5: 
  189-248. 
  pL 
  1-2 
  +/, 
  J-JJ. 
  Mr 
  

   1920. 
  

  

  