ERRATA. 
Page 238, last line, /or ‘and formed ’ read 4 though they formed ’ 
„ 248, line 1 2 from bottom, for 4 tetrach ’ read 4 tetrarch ’ 
,, 284, „ 12 ,, „ omit 4 it ’ 
„ 285, „ 14 „ „ for 4 sexual ’ read 4 asexual ’ 
„ 295, ,,21 ,, „ for 4 nuclei ’ read 4 chromosomes ’ 
„ 298, „ 5 from top, for 4 not’ read ‘ no ’ 
„ 299, „ 2 „ „ for 1 with ’ read ‘ without ’ 
„ 302, ,, 13 from bottom, for ‘ alternation ’ read 4 alteration ’ 
„ 306, ,,13 „ „ for 4 small ’ read 1 single ’ 
,, 338, ,, 17 „ ,, dele comma after 4 margine ’ 
,, 340, „ 9 from top, for 4 Favellae ’ read 4 Favellis ’ 
,, „ ,, 5 from bottom, for ‘frons ’ read l fronde ’ 
„ „ ,, 2 ,, ,, insert comma after 4 minoribus ’ : dele comma after 
‘ tenui ’ 
„ „ last line, for ‘ Sphaerosporae ’ read ‘ Sphaerosporis ’ 
„ 341, line 2 from top, for ‘ divisae ’ and ‘ immersae ’ read ‘ divisis ’ and 
‘ immersis ’ 
,, „ line 7 from top, for ‘ vestitis ’ read ‘ vestita ’ 
„ 342, „ 24 from bottom,/^ 4 Myrioglossa ’ 4 Myriophylla ’ 
