﻿474 
  Arthur: 
  New 
  species 
  of 
  Uredineae 
  

  

  On 
  Ixoraferrea 
  (Jacq.) 
  Benth. 
  {Siderodendron 
  triflorum 
  Vahl), 
  

   Bahia 
  Honda, 
  Cuba, 
  October 
  28, 
  1919, 
  S. 
  C. 
  Bruner 
  1133. 
  . 
  

  

  A 
  very 
  distinctive 
  form, 
  and 
  especially 
  remarkable 
  in 
  having 
  

   hemispherical 
  pycnia 
  with 
  flat 
  hymenia, 
  that 
  are 
  beneath 
  the 
  

   firm 
  epidermis, 
  opening 
  at 
  first 
  by 
  a 
  minute 
  central 
  pore 
  to 
  dis- 
  

   charge 
  the 
  pycniospores, 
  and 
  in 
  all 
  characters 
  similar 
  to 
  pycnia 
  

   heretofore 
  known 
  only 
  as 
  subcuticular. 
  The 
  large 
  areas 
  over 
  

   which 
  the 
  original 
  infection 
  seems 
  to 
  spread, 
  producing 
  a 
  brown, 
  

   deadened 
  appearance 
  pn 
  both 
  surfaces 
  of 
  the 
  thick, 
  leathery 
  

   leaves, 
  make 
  the 
  species 
  an 
  easy 
  one 
  to 
  detect 
  in 
  the 
  field. 
  Mr. 
  

   Bruner 
  writes 
  that 
  the 
  type 
  locality 
  is 
  in 
  a 
  rather 
  inaccessible 
  

   district 
  in 
  the 
  mountains, 
  some 
  six 
  miles 
  from 
  the 
  village 
  of 
  Bahia 
  

  

  Honad. 
  

  

  Aecidium 
  indecisum 
  sp. 
  nov. 
  

  

  80-1 
  

  

  0. 
  Pycnia 
  hypophyllous, 
  scattered 
  over 
  all 
  or 
  large 
  areas 
  of 
  

   the 
  leaves 
  among 
  the 
  aecia, 
  conspicuous, 
  honey-yellow, 
  subepi- 
  

   dermal, 
  in 
  section 
  globoid, 
  " 
  * 
  " 
  

   long. 
  

  

  1. 
  Aecia 
  hypophyllous, 
  scattered 
  from 
  a 
  diffused 
  mycelium, 
  

   cupulate, 
  0.3-0.5 
  mm. 
  in 
  diameter, 
  projecting 
  but 
  slightly 
  above 
  

   the 
  host 
  tissue; 
  peridium 
  remaining 
  somewhat 
  incurved 
  and 
  

   covered 
  by 
  the 
  host 
  tissues, 
  the 
  margin 
  erose; 
  peridial 
  cells 
  in 
  

   section 
  oblong 
  or 
  rhomboidal, 
  16-26 
  by 
  30-40 
  /x, 
  abutted, 
  or 
  

   slightly 
  overlapping, 
  the 
  outer 
  wall 
  thick, 
  8-10 
  ^u, 
  transversely 
  

   striate, 
  smooth, 
  the 
  inner 
  wall 
  thinner, 
  3-6 
  n, 
  closely 
  and 
  rather 
  

   finely 
  verrucose 
  ; 
  aeciospores 
  ellipsoid 
  or 
  globoid, 
  16-19 
  by 
  21 
  26 
  /x; 
  

   wall 
  colorless, 
  thin, 
  1-1.5 
  ix, 
  closely 
  and 
  inconspicuously 
  verrucose. 
  

  

  On 
  Ranunculus 
  californicus 
  Benth., 
  Berkeley, 
  California, 
  

   March 
  11, 
  1893 
  (Sydow, 
  Ured. 
  goo; 
  Barth. 
  N. 
  Am. 
  Ured. 
  J303), 
  

   W. 
  C. 
  Blasdale. 
  

  

  This 
  appears 
  much 
  like 
  Aecidium 
  Ranunculi 
  Schw., 
  the 
  name 
  

   under 
  which 
  it 
  has 
  been 
  distributed, 
  but 
  differs 
  in 
  its 
  much 
  more 
  

   robust 
  development, 
  the 
  measurements 
  in 
  every 
  way 
  being 
  greater.. 
  

   A 
  . 
  Ranunculi 
  Schw. 
  is 
  known 
  to 
  be 
  the 
  aecial 
  form 
  of 
  Puccinia 
  

   Eatoniae 
  Arth. 
  on 
  species 
  of 
  Sphenopholis. 
  Both 
  this 
  rust 
  and 
  

  

  be 
  

  

  Mountains 
  

  

  belong 
  to 
  some 
  inconspicuous 
  and 
  rather 
  evanescent 
  grass 
  rust, 
  

   probably 
  not 
  yet 
  reported. 
  

  

  