﻿476 
  Arthur: 
  New 
  species 
  of 
  Uredineae 
  

  

  globoid, 
  95-125 
  /x 
  broad 
  by 
  60-95 
  ju 
  high; 
  ostiolar 
  filaments 
  up 
  

   to 
  125 
  /x 
  long. 
  

  

  I. 
  Aecia 
  hypophyllous, 
  crowded 
  in 
  spots 
  with 
  the 
  pycnia, 
  

   cylindric, 
  0.2-0.3 
  mm. 
  wide, 
  0.5-1 
  mm. 
  high; 
  peridium 
  white, 
  the 
  

   margin 
  somewhat 
  erect, 
  erose; 
  peridial 
  cells 
  rhomboidal, 
  19-26 
  

  

  9- 
  

  

  transversely 
  striate, 
  smooth, 
  the 
  inner 
  wall 
  4-6 
  /x 
  thick, 
  closely 
  

  

  and 
  rather 
  coarsely 
  verrucose; 
  aeciospores 
  globoid 
  or 
  ellipsoid, 
  

  

  19-23 
  by 
  23-29 
  m; 
  wall 
  colorless, 
  1.5-2.5 
  /i 
  thick, 
  very 
  closely 
  and 
  

   finely 
  verrucose. 
  

  

  On 
  Salvia 
  candicans 
  Mart. 
  & 
  Gall., 
  hills 
  about 
  Tehuacan, 
  

  

  M 
  

  

  M 
  

  

  N. 
  

  

  M 
  

  

  July 
  

  

  This 
  species 
  somewhat 
  resembles 
  the 
  aecia 
  of 
  Piiccinia 
  caulicola 
  

   Tr. 
  & 
  GalL, 
  as 
  well 
  as 
  the 
  Mexican 
  Aecidiiim 
  zonatum 
  Sacc, 
  but 
  

   the 
  walls 
  both 
  of 
  the 
  spores 
  and 
  of 
  the 
  peridial 
  cells 
  are 
  much 
  

   thicker. 
  Dr. 
  Mains, 
  who 
  has 
  made 
  a 
  special 
  study 
  of 
  the 
  Salvia 
  

   rusts, 
  has 
  joined 
  me 
  in 
  deciding 
  upon 
  the 
  status 
  of 
  this 
  species. 
  

  

  Aecidium 
  Betheli 
  sp. 
  nov. 
  

  

  0. 
  Pycnia 
  not 
  seen. 
  

  

  1. 
  Aecia 
  hypophyllous, 
  subepidermal, 
  in 
  small 
  and 
  crowded 
  

   groups 
  1-3 
  mm. 
  across, 
  on 
  a 
  hemispherical, 
  hypertrophied 
  sub- 
  

   stratum, 
  cupulate, 
  small, 
  0.1-0.2 
  mm. 
  in 
  diameter; 
  peridium 
  low, 
  

   erect, 
  the 
  margin 
  erose; 
  peridial 
  cells 
  readily 
  falling 
  apart, 
  rhom- 
  

   boidal, 
  13-18 
  by 
  19-23/1, 
  strongly 
  overlapping, 
  the 
  outer 
  wall 
  

   7-9 
  ju 
  thick, 
  transversely 
  striate, 
  smooth, 
  the 
  inner 
  wall 
  i 
  ^t, 
  evenly 
  

   and 
  noticeably 
  verrucose; 
  aeciospores 
  globoid, 
  small, 
  13-18 
  by 
  

   16-18/1; 
  wall 
  colorless, 
  thin, 
  i 
  ju 
  or 
  less, 
  very 
  finely 
  and 
  evenly 
  

  

  verrucose. 
  

  

  calif 
  or 
  nica 
  (S. 
  Wats.) 
  J 
  

  

  fornia, 
  August 
  15, 
  1916 
  (type), 
  August 
  24, 
  1918, 
  £. 
  BetheL 
  

  

  Found 
  in 
  abundance 
  associated 
  with 
  Pticcinia 
  canaliculata 
  

   (Schw.) 
  Lagerh., 
  on 
  Cyperus 
  esctiJentus, 
  but 
  probably 
  not 
  geneti- 
  

   cally 
  connected, 
  as 
  neither 
  the 
  relationship 
  of 
  the 
  host 
  nor 
  the 
  

   structure 
  of 
  the 
  aecia 
  agrees 
  with 
  those 
  of 
  the 
  known 
  aeclal 
  stage 
  

   for 
  that 
  species. 
  The 
  species 
  is 
  dedicated 
  to 
  the 
  discoverer, 
  who 
  

  

  