﻿466 
  Arthur: 
  New 
  species 
  of 
  Uredineae 
  

  

  tate 
  or 
  clavate-capitate, 
  20-30 
  /x 
  broad 
  in 
  upper 
  part, 
  30-60 
  /x 
  

   long, 
  in 
  strongly 
  capitate 
  forms 
  the 
  wall 
  4-5 
  /x 
  thick, 
  obliterating 
  

   the 
  lumen 
  of 
  the 
  stalk, 
  thicker 
  at 
  apex, 
  6-9 
  jjl, 
  in 
  clavate 
  forms 
  the 
  

   wall 
  1-2 
  fx 
  thick, 
  thicker 
  above, 
  2-5 
  /i, 
  colorless, 
  smooth; 
  uredinio- 
  

   spores 
  globoid 
  or 
  broadly 
  ellipsoid, 
  small, 
  13-16 
  by 
  15-20 
  ju; 
  wall 
  

   colorless, 
  moderately 
  thin, 
  1,5-2 
  /x, 
  closely 
  and 
  finely 
  verrucose. 
  

  

  III. 
  Telia 
  hypophyllous, 
  scattered, 
  irregularly 
  roundish, 
  0.2- 
  

   0.4 
  mm. 
  across, 
  reddish-brown, 
  subepidermal, 
  indehiscent, 
  telio- 
  

   spores 
  oblong 
  or 
  prismatic, 
  rounded 
  at 
  both 
  ends, 
  7-12 
  by 
  30-32 
  fi] 
  

   wall 
  light-brown, 
  uniformly 
  thin, 
  about 
  i 
  }i, 
  smooth. 
  

  

  On 
  Abies 
  balsamea 
  (L.) 
  Mill., 
  Pictou, 
  Nova 
  Scotia, 
  June 
  24, 
  

   1910, 
  W. 
  P. 
  Fraser; 
  Brule, 
  Wisconsin, 
  June-July, 
  1913, 
  E. 
  M. 
  

   Gilbert; 
  Fish 
  Creek 
  [Green 
  Bay 
  peninsula], 
  Wisconsin, 
  

  

  J 
  

  

  Michigan, 
  June 
  20, 
  1914, 
  C. 
  H. 
  Kanff- 
  

  

  Walden, 
  Vermont, 
  July 
  

  

  July 
  

  

  1912, 
  /. 
  C. 
  Arthur 
  8504 
  (Barth. 
  Fungi 
  Columb. 
  3819); 
  Palmer 
  

   Lake, 
  Colorado, 
  July 
  3, 
  18, 
  1913, 
  & 
  July 
  15, 
  1916, 
  E. 
  Bethel. 
  

  

  balsamif, 
  

  

  W. 
  

  

  July 
  

  

  ) 
  

  

  November 
  (?), 
  191 
  o 
  III, 
  W. 
  P. 
  Fraser 
  (type, 
  partly 
  used 
  for 
  

   cultures); 
  Orient, 
  New 
  York, 
  September 
  7, 
  1914, 
  II, 
  September 
  

   28, 
  1919, 
  II, 
  Roy 
  Latham. 
  

  

  Salix 
  humilis 
  Marsh., 
  Orient, 
  New 
  York, 
  September 
  19, 
  191; 
  

  

  II, 
  III, 
  Roy 
  Latham 
  64/. 
  

  

  On 
  Salix 
  monticola 
  Bebb, 
  Palmer 
  Lake, 
  Colorado, 
  September 
  6, 
  

   1913, 
  II. 
  E. 
  Bethel. 
  

  

  On 
  Salix 
  pedicellaris 
  Pursh, 
  Solon 
  Springs, 
  Wisconsin, 
  August 
  

   13. 
  1915, 
  11, 
  III, 
  /. 
  /. 
  Davis. 
  

  

  On 
  Salix 
  Scouleriana 
  Barr., 
  Libby, 
  Montana, 
  October 
  15, 
  

   191 
  1, 
  il. 
  III, 
  James 
  R. 
  Weir; 
  Ouray, 
  Colorado, 
  July 
  24, 
  1912, 
  II, 
  

   Mrs. 
  J. 
  C. 
  Arthur 
  4307; 
  Palmer 
  Lake, 
  Colorado, 
  September 
  6, 
  

   1913, 
  II, 
  iii, 
  E. 
  Bethel, 
  September 
  20, 
  1913, 
  II, 
  III, 
  Bartholomew 
  & 
  

   Bethel 
  5669. 
  

  

  M 
  

  

  W. 
  

  

  This 
  is 
  a 
  common 
  and 
  abundant 
  species, 
  extending 
  practically 
  

   throughout 
  the 
  United 
  States 
  and 
  southern 
  Canada, 
  and 
  probably 
  

  

  