442 OPHIOGLOSSALES 
Fic. 241. 
Botrychium Lunaria, Sw. a=forma normalis, Roeper. b=var. incisa, Milde. 
c=var. subincisa, Roeper. All of natural size. d=part of the fertile spike, with open 
sporangia, enlarged. e=two open sporangia somewhat bent asunder, to show their 
attachment, enlarged. From Luerssen in Rabenhorst’s Kvyft. Flora. 
development of the fertile region have been described, even up to 
its complete replacement by a sterile structure quite like the normal 
sterile leaf: this will rank as ‘“phyllody.” But, on the other hand, it is 
