THE FERN BULLETIN 



49 



in sufficient quantity were to be sown on some dry 

 hillside that was easily accessible to the experimenter. 

 Immediate results however should not be expected as 

 these Botrychiums move very slowly, according to 

 some experimenters requiring several years before 

 germination of the spores. Moreover in the present 

 case the continued growth of the young plants would 

 be very much dependent on the amount of moisture 

 they might receive as is evidenced by the total destruc- 

 tion of the plants at Newfound Hill by a very severe 

 drouth. 



Since speaking on this subject before the members 

 of the American Fern Society I have been informed of 

 two other instances besides those at that time men- 

 tioned where plants of B. simplex once found had dis- 

 appeared which seems further evidence that the form 

 simplex in Botrychium described by Hitchcock as 

 growing in dry hills is not self-perpetuating. 

 Newbury p or t h Mass. 



[To the instances of the disappearance of B. sim- 

 plex, may now be added the disappearance of the 

 colony found at Glen Park, Indiana in 1910. In that 

 year there was perhaps a hundred plants found. Every 

 year since, members of the Joliet Botanical Club and 

 others have searched for them but not a single speci- 

 men has been discovered. Some Botrychiums have the 

 habit of resting for a year or more, but it hardly 

 seems likely that they would rest for three summers in 

 succession. — Ed. ] 



RARE FORMS OF FERN WORTS- XXII. 

 Still Another Christmas Fern. 

 In 1893, the late James A. Graves found a curious 

 form of Christmas fern (Polystichum acrostichoides) 

 in th£ vicinity of Susquehanna, Pa., and removed it 



