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 T A B .  CXXXIX.  
 UREDO  LONGISSIMA.  
 P o A  Aquatica,  very  pientiM  in  one part  of  Lambeth  
 Marlli,  bears  this  parafite  on  the  fohage  early  in  autumn, 
   which gives the  appearance of  the frudtification  
 of  an AJplemum.  It  feems nearly  allied  to  ^. fegetum  
 of Bull.  2. (viz.)  the  fmut,as  it is  commonly  
 called,  of  the  corn ;  but  this  fine  duft is brodai,  and  
 imbedded in longitudinal ftreaks in the  fubftance of  the  
 foliage,  covered  by  the  epidermis,  which  it  burils  on  
 the  front,  and  is  vifible  by  being  tranfparent  at  the  
 back.  The  fmut  feems a  change  of  the  fubftance of  
 the  feed, covered  by its epidermis, and is much  blacker.  
 See  Uihilata  in Bibliotbeca Bankfiana, vol.  3. p. 432, and  
 431.  The  French call it Ergot.  Uredo  is a new genus  
 oi  Perfoon,  in  his work  on Fungi.  
 T  A  B.  CLX.  
 U R E D O  FRUMENTI.  
 M u c h  too common on wheat  in low places, or where  
 too  clofely  fown, efpecially  after  rain  in  the  early  part  
 of  autumn.  This  takes  poffeffion of  the  foliage  like  
 the  laft,  but  rather  in  ihape  of upright  iliort  clavated  
 thr^ds,black  at the top, appearing fcorchedat the bafes,  
 in  ihorter  fpaces,  and  frequently  burft on  both  fides.  
 upper  and  outer  
 paits  of  the  ftem  calyx,  &c.  for near  two  feet,  feldom  
 touching the  feed, although  it may ftint it more or  lefs  
 by  ^^^akening  the  plant.  This  is  commonly  diftinguifhed  
 by  the appellation of  the blight.  
 T A B .  CXLI.  
 AGARICUS  MiNiATUs.  Schaff. tab. 213.  
 F o u n d  by  Lady  Arden  at Boxhill,  Surry,  and  alfo  
 by  the Rev. John Hemfted, Newmarket.  It is  not  very  
 rare,  although  I  believe  hitherto  unnoticed  by  any  
 Britifli  author.  It is fomewhat fportive ; which,  however, 
   in  all  the  fungi  depends  much  on  the  place  of  
 growth,  or  variablenefs  of  the  feafon.  Pileus  fometimes  
 with  a  large  bofs,  at  other  times  more  hemifpbierical; 
   generally  of  a deep  buff hue,  as well  as the  
 gills,  which  are  rather  wide  afunder.  The  ftipes  is  
 lighter  coloured,  folid, but  pithy.  
 T A B .  CXLII.  
 AGARICUS  opAcus.  With. ed.  p.  183.  
 T h e  filvery  glare  and  opaque  furface of  the  pileus  
 will  generally  diftinguifh  this  plant;  yet  under  particular  
 circumftances  we  have  feen  it  without  this  
 mark, when  it occafionally reprefents  A.  infundibuUformis, 
  t.  286,  and  A. Jimbriatus, Bolt.  t.  61.  It  is a  very  
 common  plant,  grov/ing  in  woods,  on  heaths,  &:c.  
 and  occafionally  along  with  A.  orcades, which  it  re- 
 ^mbles  in  flavour,  but  is  more  watery  and  tender.  
 The^opaque glare will eafily rub off when frefli, though  
 we  have  dried  fpecimens  that  retain  it.  
 T A B .  CXLIII.  
 AGARICUS  PALLiDus .  Scbaff. tab. 50.  
 produces  this  plant  plentifully  
 Hp.  refemblance  to  the  laft  fpe- 
 T.^u^^^^'i®  opaque,  but  not  filvery  or  
 ^  ^nd difagreeable  
 taite.  1 he  ^lls  invariably  produce  on  their  outer  furd 
 r y i n g  powder,  in  the  advanced  ftate,  and  in  
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