﻿Haynes: 
  Six 
  species 
  of 
  Riccia 
  283 
  

  

  w 
  

   4 
  

  

  That 
  portion 
  of 
  the 
  froild 
  between 
  the 
  canal 
  and 
  the 
  acute 
  margin 
  

   is 
  slightly 
  convex 
  above 
  as 
  if 
  thickened. 
  The 
  typical 
  form 
  appears 
  

   to 
  be 
  near 
  i?. 
  pamdoxa, 
  De 
  Not. 
  [now 
  included 
  among 
  the 
  synonyms 
  

   of 
  R. 
  Michelii 
  Raddi], 
  but 
  that 
  is 
  described 
  as 
  being 
  a 
  smaller 
  

   species, 
  and 
  the 
  spores 
  are 
  said 
  to 
  be 
  light-red. 
  ... 
  The 
  sporan- 
  

   gia 
  are 
  placed 
  rather 
  towards 
  the 
  apex 
  of 
  the 
  lobes 
  as 
  in 
  R. 
  palmata 
  

   Lindbg.; 
  which 
  appears 
  to 
  be 
  a 
  larger 
  species, 
  with 
  the 
  lobes 
  of 
  

   the 
  frond 
  concave-canaliculate 
  above, 
  &c., 
  and 
  seems 
  to 
  be 
  

   intermediate 
  between 
  this 
  and 
  the 
  following 
  species 
  [R. 
  Les- 
  

   curiana 
  Aust., 
  now 
  R. 
  Beyrichiana]." 
  

  

  Habitat: 
  In 
  fields 
  and 
  wet 
  broken 
  ground; 
  common. 
  

  

  Distribution: 
  New 
  Hampshire 
  and 
  Ontario 
  to 
  Indiana 
  and 
  

   Texas 
  . 
  

  

  ExsiccATAE 
  : 
  Aust. 
  Hep. 
  Bor.-Am. 
  141; 
  Haynes, 
  Am. 
  Hep. 
  2, 
  g8. 
  

  

  e 
  

  

  5- 
  Riccia 
  hirta 
  Aust. 
  ; 
  Underw. 
  Bot. 
  Gaz. 
  19 
  : 
  274. 
  1894 
  

  

  Riccia 
  arvensis 
  hirta 
  Aust. 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philad. 
  1869: 
  

  

  . 
  1869. 
  

  

  'Var. 
  /3, 
  hirta. 
  Statura 
  majora, 
  frondesubtus 
  magis 
  purpurea 
  

   et 
  squamigerula 
  margine 
  evidentius 
  ciliata, 
  supra 
  omnino 
  hirta. 
  — 
  

   Hep. 
  Bar. 
  Amer, 
  Exsic. 
  ined., 
  No. 
  142. 
  — 
  R. 
  hirta, 
  Aust, 
  MSS. 
  1864; 
  

  

  "- 
  . 
  - 
  (the 
  var.) 
  in 
  rocky 
  places 
  about 
  Closter, 
  New 
  Jersey. 
  

  

  (( 
  

  

  M 
  

  

  choff\ 
  

  

  scale-bearing 
  underneatn, 
  and 
  not 
  membranaceous 
  on 
  the 
  margin." 
  

  

  Habitat: 
  moist 
  rocky 
  ground. 
  

  

  Distribution: 
  Connecticut 
  to 
  Louisiana 
  and 
  Texas. 
  

   Exsiccatae: 
  Aust. 
  Hep. 
  Bor.-Am# 
  142 
  {p.p., 
  as 
  R. 
  arvensis 
  

   var. 
  hirta). 
  - 
  . 
  

  

  Riccia 
  Curtisii 
  James 
  (Aust. 
  Proc. 
  Acad. 
  Nat. 
  Sci, 
  Philad. 
  1869 
  - 
  

   231. 
  1869, 
  as 
  synon.) 
  Steph. 
  Bull. 
  Herb. 
  Boiss. 
  6: 
  369. 
  1898 
  

  

  This 
  was 
  originally 
  described 
  as 
  representing 
  a 
  new 
  genus, 
  

  

  fterwards 
  changed 
  to 
  ThaJlocarp 
  

  

  as 
  follows: 
  

  

  'XRYPTOCARPUS, 
  (gen. 
  nov.) 
  Aust. 
  MSS,, 
  1864. 
  

  

  '*Frons 
  l^xe 
  spongioso-reticulata, 
  irregulariter 
  subpalmatim 
  

   lobata, 
  tenuis, 
  epidermide 
  haud 
  distincta. 
  Costa 
  nulla. 
  Radices 
  

  

  ^ 
  ■ 
  ■ 
  ' 
  „_^ 
  

  

  * 
  Not. 
  F. 
  et 
  FI. 
  Fenn, 
  13 
  : 
  377. 
  1874. 
  

  

  