ER RATA. 



P. 429 1. 7 add (ieysir! 



- 434 - 1 should read "I. Musci veri"'. 



- 438 - 25 for "elongatum" read "elongatus". 



- 463 - 10 from bottom for "Weissia" read "Weisia" 



- 471 - 6 for '"Wiinsted" read ""Wiinstedt". 



- 473 - 24 for "tefiHifolia" read "grandiflora''. 



- 588 - 19 for "Associations" read ■"Formations". 



