Letters to a Friend 



A. acrostichoides are also abundant in many 

 places. I found specimens of most of the other 

 aspidiums, but those I have mentioned are more 

 common. Cystopteris bulbifera grows in every 

 arbor-vitae shade in company with the beau 

 tiful and fragrant Linncza borealis. Botrychium 

 lunarioides is a common fern in many parts of 

 Canada. Osmunda regalis is far less common 

 here than in Wisconsin. I found it in only two 

 localities. Six Claytoniana only in one place 

 near the Niagara Falls. The delicate Adiantum 

 trembles upon every hillside. Struthiopteris Ger- 

 manica grows to a great height in open places 

 in arbor-vitae and black ash swamps. Campto- 

 sorus rhizophyllus and Scolopendrium officina- 

 rum I found in but one place, amid the wet 

 limestone rocks of Owen Sound. There are 

 many species of sedge common here which I do 

 not remember having seen in Wisconsin. Ca 

 lypso borealis is a lovely plant found in a few 

 places in dark hemlock woods. But this is an 

 endless thing; I may as well stop here. 

 I have been very busy of late making prac- 

 [3] 



