mission  to  abstract  a  fragment  of  the  precious  relic,  to  be  preserved  
 in  the Dublin  Herbarium.  The  singular  grape-like  fructification  
 at  once  marks  the  species,  and  on  the  specimen  found  
 almost  every  thread  had  more  or  less  numerous  clusters.  So  
 that  it  fortunately  happens,  that  a  small  specimen  of  this rarity  
 is  as  characteristic  as  a much  larger would be,—no  smaU  advantage, 
   when  a  half-crown would  cover  all  the  specimens  at  present  
 known  to  botanists.  Dr. Greville has  repeatedly  sought  it  
 in  vain  in  the  spot  on which  the  solitary  tuft was  picked up  by  
 Sir  J. Richardson,  previous  to  his  first  and  memorable  Arctic  
 Voyage. 
 Fig.  1.  Tuft  of Sphacelaiua  racemosa :—the natural size.  2.  Upper portion  
 of a frond:—magnified.  3.  Apex  of a branch, with branches of spores;  and  
 4,  one  of the pedicellate  spores;— nmre highly magnified. 
 f 
 M