﻿478 
  Arthur: 
  New 
  species 
  of 
  Uredineae 
  

  

  L 
  Aecia 
  hypophyllous, 
  subepidermal, 
  thickly 
  covering 
  the 
  

   surface 
  of 
  the 
  leaf, 
  short 
  cylindric, 
  0.2-0.4 
  mm. 
  in 
  diameter; 
  

   peridium 
  erect, 
  erose; 
  peridial 
  cells 
  rhomboidal, 
  16-19 
  by 
  26-32 
  /x, 
  

   strongly 
  overlapping, 
  the 
  outer 
  wall 
  3-5 
  /z 
  thick, 
  smooth, 
  the 
  

   inner 
  wall 
  6-g 
  /x, 
  prominently 
  verrucose 
  ; 
  aeciospores 
  globoid, 
  

  

  19-23 
  by 
  21-24 
  ju; 
  wall 
  colorless, 
  thin, 
  i 
  /x, 
  closely 
  and 
  finely 
  

   verrucose. 
  • 
  

  

  T 
  

  

  On 
  Polygala 
  longa 
  Blake, 
  Organ 
  Mountains, 
  New 
  Mexico, 
  

   August 
  29, 
  1894, 
  E. 
  0. 
  Wooton, 
  

  

  This 
  Is 
  a 
  species 
  similar 
  in 
  character 
  and 
  appearance 
  to 
  Aeci- 
  

   dium 
  polygalmtim 
  Peck 
  on 
  Polygala 
  Senega 
  from 
  the 
  northern 
  

   United 
  States, 
  but 
  has 
  a 
  more 
  vigorous 
  development, 
  with 
  larger 
  

   aecia 
  and 
  aeciospores. 
  

  

  Aecidium 
  arcularium 
  sp. 
  nov. 
  

  

  0. 
  Pycnia 
  epiphyllous, 
  gregarious, 
  minutely 
  punctiform, 
  

   inconspicuous, 
  subepidermal, 
  in 
  section 
  globoid 
  or 
  depressed- 
  

   globoid, 
  100-130 
  jtx 
  broad 
  by 
  90-100 
  /x 
  high; 
  ostiolar 
  filaments 
  

   up 
  to 
  45 
  /x 
  long. 
  

  

  1. 
  Aecia 
  hypophyllous 
  and 
  cauHcolous, 
  usually 
  densely 
  

   crowded 
  in 
  groups 
  4-10 
  mm. 
  across; 
  peridlupi 
  cylindric, 
  the 
  

   margin 
  erect, 
  erose 
  or 
  deeply 
  lacerate; 
  peridial 
  cells 
  ellipsoid 
  or 
  

   oblong, 
  angular, 
  21-29 
  by 
  27-40 
  /x, 
  the 
  cells 
  overlapping, 
  the 
  

   outer 
  wall 
  5-10 
  /x 
  thick, 
  transversely 
  striate, 
  smooth, 
  the 
  inner 
  

   wall 
  2-5 
  /x 
  thick, 
  finely 
  verrucose; 
  aeciospores 
  globoid 
  or 
  ellipsoid, 
  

   18-23 
  by 
  22-29 
  m; 
  wall 
  colorless 
  or 
  pale 
  cinnarhon-brown, 
  1-^1.5 
  ^ 
  

   thick, 
  finely 
  verrucose. 
  

  

  On 
  Coleosanthus 
  grandiflortis 
  (Hook.) 
  Kuntze 
  {Brickellia 
  

   grandiflora 
  Nutt.), 
  Beulah, 
  New 
  Mexico, 
  1889, 
  T, 
  D, 
  A. 
  CockereU; 
  

   Cloudcroft, 
  New 
  Mexico, 
  September 
  16, 
  1903, 
  E. 
  W. 
  D. 
  Hohijay; 
  

  

  + 
  

  

  Upper 
  Miller 
  Canyon, 
  Huachuca 
  Mountains, 
  Arizona, 
  August 
  14^ 
  

   1909, 
  Boulder 
  Canyon, 
  Colorado, 
  August, 
  1914, 
  E. 
  Bethel; 
  Ute 
  

   Park, 
  Colfax 
  County, 
  New 
  Mexico, 
  August 
  20, 
  1916, 
  Paul 
  C. 
  

   Standley 
  13383; 
  Grousemont, 
  Platte 
  Canyon, 
  Colorado, 
  July, 
  

   1918, 
  Mrs, 
  Emily 
  Arthur 
  (type); 
  Idaho 
  Springs, 
  Colorado, 
  August 
  

   7, 
  1919, 
  /. 
  M. 
  Bates 
  6g8j. 
  

  

  A 
  conspicuous 
  species, 
  usually 
  occurring 
  in 
  abundance 
  within 
  

   limited 
  area. 
  It 
  is 
  sometimes 
  associated 
  with 
  uredlnia 
  or 
  telia 
  

   of 
  Puccinia 
  subdecora 
  Syd. 
  & 
  Holw., 
  which 
  for 
  a 
  time 
  was 
  supposed 
  

   to 
  be 
  genetically 
  connected 
  with 
  it. 
  No 
  suggestion 
  has 
  yet 
  been 
  

   made 
  regarding 
  the 
  alternate 
  stages. 
  < 
  . 
  

  

  