Some Ferns of Korea 



19 



species.* 11 Britton and Brown note, however, that C. 

 rhizophyllus is "of eastern North America/' but the writ- 

 er has identified it with certainity in abundance on lime- 

 stone rocks and cliffs in the Ozarks of southern Missouri, 

 along the Meramec River near Bourbon and Sullivan, 

 Missouri. 



filix-fi 



corresponds ex- 



[2] 



actly to the description given by Britton and Brown. 



9. Polypodium sp.; a small, evergreen, rock-loving fern 

 with simple entire fronds. 



10. Pteris sp.; this fern is about the same size as P. 

 aquilina, but the frond is 2-4 pinnate, and not ternate. 



11. (?) ; a member of the Polypodiaceae. This is a light 

 green lacy fern 1-2 feet high, frequenting moist places; 

 the sori are on the margins of the fronds; the sporangia 

 develop in the margins and when their pedicels elon- 

 gate at maturity they push their heads out, splitting 

 open the margins as they come 4 out; when the sporangia 

 are mature the sori look like small black dots on the 

 margins of the fronds. This fern seems to be of a genus 

 not described in Britton and Brown. 



Britton and Brown note (vol. 1, p. 8) that there are 

 but three known species of Onoclea. They figure and 

 describe 0. sensibilis and 0. Struthiopteris. The writer 

 would very much like to have someone send him a des- 

 cription of the third [lJ known species 1 * 1 of Onoclea and the 

 -econd known species of Camptosorus for comparison with 

 the species which occur here. The Onoclea which grows 

 here may be only a variety of 0. sensibilis, but the 

 Camptosorus which grows here is distinct from C. rhizo- 

 phyttus. Perhaps this question should be referred to the 

 question and answer department of the Journal. 



Hol Kol, Korea, July 25, 1913. 



[ l C. sibiricm Hooker. Ed.] 

 [ f Trichoma, i, s, probably. Ed.] 

 [ 3 0. oriental is Hooker. Ed,] 



