272  Anmial  Report  for  1904  of  the  Consulting  Botanist. 
II. 
On  young  cucumbers  received  in  June  from  Worcester- 
shire was  observed  a thickisli  dark  olive-green  carpet  of  fungal 
filaments.  The  sender  said  that  the  fruits  of  all  the  plants  were 
more  or  less  affected  as  shown  in  Fig.  3,  i (page  271)  ; the  portion 
of  the  fruit  connected  with  the  stalk  is  still  uninjured,  whilst  the 
other  part  is  greatly  reduced  in  size  and  killed  by  the  parasite. 
The  leaves  showed  in  this  case  no  trace  of  the  disease.  After 
careful  microscopic  examination  a drawing  was  made  of  the 
fungus,  and  it  is  here  reproduced.  My  observations  agree  with 
those  of  Professor  Maze,  and  no  doubt  the  two  fungi  are 
identical.  I found  that  the  spores  contained  as  many  as  twenty- 
two  divisions  and  that  they  adhered  to  the  conidiophores  and 
to  each  other  by  a fine  and  very  short  filamental  tube  (see 
Fig.  3,  4 and  5). 
The  systematic  position  of  the  fungus  is  amongst  the 
Hyphomycetes.,  and  it  is  nearly  related  to  the  genera  Poly- 
desmus  and  Helniinthosporium.  In  Pulydesmus  the  spores 
are  constricted,  uniformly  club-shaped,  and  the  conidiophores 
short  ; whereas  in  the  new  fungus  the  spores  are  not  con- 
stricted, are  variable  in  form,  and  the  conidiophores  are  longer 
than  the  spores.  In  B.elmmthospormm  the  spores  are  borne 
singly,  whereas  in  this  fungus  they  are  united  in  chains.  Under 
these  circumstances  it  must  be  placetl  in  an  intermediate  genus, 
and  I propose  to  name  it  Corynesponi  Mazei.,  gen.  et  spec.  nov. 
The  Laboratory, 
44  Central  Hill,  Norwood,  S.E. 
Hans  Th.  Gtissow. 
