ERRATA. 



Page 14, line 20, for "Lindl" read " Lindb." 



" 35, " 29, " "peetristoinii " read " peristomii." 



■ " 41, " 28 and 30, for " Hedwigium " read " Hedwigidium." 

 " 42, " 4, for "Hedwigium " read " Hedwigidium." 



