440 



OPHIOGLOSSALES 



FIG. 240. 



Botrychium simplex, Hitchc. Developmental series of forms in alphabetical suc- 

 cession ; a-f forma shnplicissima, Lasch, that is young stages of development ; g-k 

 forma incisa, Milde ; and I transition to forma subcomposita, Lasch, m and n ; in has an 

 enlarged fertile basal segment of the sterile leaf; o-r=forma composita, Lasch ; rwith 

 four primary segments of the sterile part. The description is from Luerssen in Raben- 

 horst's Krypt. flora, and the drawings were from specimens in his herbarium. Natural 

 size. 



