Polystichum aero stick old es Schott. Christmas Fern. Sword 

 Fern. One of our most abundant species. 



Pteris aquilina L. Bracken. Not common. I find it on 

 rocky bluffs and in thickets in well-drained soil, usually in half 

 shade. Williamson's assertion that it is always associated with 

 the huckleberry is rather sweeping, as it grows on many Ken- 

 tucky knobs where there is no laurel or other heath. Most 

 sandstone hills, however, have two or three species of huckle- 

 berry on them, so the bracken is often found with them. 



Pellaea atropurpurea Link. Winter Brake. One of the 

 commonest ferns of the State. It is common on all limestone 

 knobs and is a well-known feature of cave entrances, growing in 

 crevices where no other plant can gain a foothold. 



Woodsia obtusa Torr. Common on limestone, especially along 

 rivers. One of the earliest ferns to unroll, often appearing in 

 February. 



LYCOPODIACEAE. 



Lycopodium lucidnlum Michx. Common in suitable places. The 

 form named porophilum is found on rocks in many places. First 

 found in Warren county in 1892. I think this is the species Prof. 

 Hussey identified as L. selago from Edmonson county. I have 

 botanized extensively in this and adjoining counties and have 

 never found selago. 



Lycopodium complanatum L. Not uncommon in mountainous 

 regions. 



Lycopodium obscurum h. Not uncommon. 



SELAGINELLACEAE. 

 Selaginella apus L. Creeping Seeaginelea. Plentiful in suit- 

 able places. 



A Correction. 



On page 24 of the January Bueeetin, in the key of 

 Equisetum variegatum varieties, the sheaths of varieties Jcsupi 

 and Alaskanum are spoken of as light. The word should be 

 tight in each case. — A. A. Baton. 



