﻿Arthur: 
  New 
  species 
  of 
  Uredineae 
  479 
  

  

  Aecidium 
  Liabi 
  sp. 
  nov. 
  

  

  * 
  

  

  O. 
  Pycniaepiphyllous, 
  somewhat 
  loosely 
  grouped 
  on 
  discolored 
  

   areas, 
  inconspicuous, 
  dark-brown, 
  subepidermal, 
  ellipsoid, 
  about 
  

   95 
  by 
  128 
  jLt; 
  ostiolar 
  filaments 
  short, 
  about 
  45 
  11. 
  

   ' 
  L 
  Aecia 
  hypophyllous, 
  in 
  groups 
  up 
  to 
  8 
  mm. 
  in 
  diameter, 
  

   cupulate, 
  0.3-0.8 
  mm. 
  in 
  diameter; 
  peridium 
  pale-yellow, 
  fragile; 
  

   peridial 
  . 
  cells 
  rhomboidal," 
  19-23 
  by 
  35-55 
  ju, 
  considerably 
  over- 
  

   lapping, 
  the 
  outer 
  wall 
  2-5 
  /x 
  thick, 
  smooth, 
  the 
  inner 
  wall 
  thicker, 
  

   5-7 
  /i, 
  closely 
  tuberculate-verrucose; 
  aeclospores 
  angularly 
  globoid, 
  

   21-26 
  by 
  26-31 
  m; 
  wall 
  colorless, 
  1.5-2.5 
  fi 
  thick, 
  closely 
  and 
  dis- 
  

   tinctly 
  verrucose. 
  

  

  F 
  

  

  On 
  Liahtim 
  sp., 
  Jalapa, 
  State 
  of 
  Veracruz, 
  Mexico, 
  September 
  

  

  2-4, 
  1910, 
  A. 
  5. 
  Hitchcock. 
  

  

  Aecidium 
  Batesii 
  sp. 
  nov. 
  

  

  0. 
  Pycnia 
  mostly 
  epiphyllous, 
  in 
  groups 
  1-3 
  mm. 
  in 
  diameter, 
  

   noticeable, 
  subepidermal, 
  chestnut- 
  or 
  chocolate-brown, 
  flattened- 
  

   globoid, 
  125-160 
  )u 
  broad 
  by 
  90-115 
  m 
  high; 
  ostiolar 
  filaments 
  up 
  

   to 
  95 
  iJL 
  long. 
  

  

  1. 
  Aecia 
  amphigenous, 
  loosely 
  grouped 
  upon 
  brownish 
  spots 
  

   4-8 
  mm. 
  across, 
  cupulate, 
  0.5-0.8 
  mm. 
  in 
  diameter; 
  peridium 
  

   yellowish, 
  the 
  margin 
  remaining 
  for 
  a 
  time 
  incurved, 
  covered 
  more 
  

   or 
  less 
  by 
  the 
  epidermis, 
  finally 
  becoming 
  recurved, 
  lacerate; 
  

   peridial 
  cells 
  oblong, 
  15-19 
  by 
  32-35 
  M, 
  slightly 
  overlapping 
  or 
  

   abutted, 
  the 
  outer 
  wall 
  rather 
  thick, 
  6-10 
  fi, 
  transversely 
  striate, 
  

   smooth, 
  the 
  inner 
  wall 
  thinner, 
  3-4 
  pt, 
  closely 
  and 
  finely 
  verrucose; 
  

   aeciospores 
  angularly 
  globoid, 
  19-23 
  by 
  24-27^1; 
  wall 
  colorless, 
  

  

  I-1.5 
  ju 
  thick, 
  very 
  closely 
  and 
  finely 
  verrucose. 
  

  

  May 
  

  

  J. 
  M. 
  Bates 
  i8i4}4> 
  

  

  This 
  rust 
  has 
  something 
  the 
  appearance 
  of 
  the 
  aecia 
  of 
  Puccinia 
  

  

  Stipae, 
  having 
  large 
  spores, 
  in 
  peridia 
  that 
  are 
  partly 
  covered 
  for 
  a 
  

  

  time 
  by 
  the 
  epidermis. 
  It 
  is 
  named 
  in 
  honor 
  of 
  its 
  discoverer, 
  

  

  who 
  has 
  for 
  many 
  years 
  been 
  indefatigable 
  In 
  making 
  the 
  rust 
  

  

  flora 
  of 
  Nebraska 
  known, 
  and 
  whose 
  field 
  observations 
  and 
  col- 
  

  

  r 
  

  

  lections 
  from 
  all 
  parts 
  of 
  the 
  state 
  have 
  been 
  freely 
  placed 
  at 
  the 
  

   service 
  of 
  students 
  of 
  the 
  Uredinales. 
  

  

  Aecidium 
  Mesadeniae 
  sp. 
  nov. 
  

  

  O. 
  Pycnia 
  epiphyllous, 
  few, 
  crowded 
  in 
  small 
  groups, 
  1-2 
  mm 
  

   across, 
  inconspicuous, 
  dark-brown, 
  subepidermal, 
  flattened-glo- 
  

  

  