BARREN AND EDMONSON COUNTIES. 13 
is not given in descriptions, although in other species of the 
same genus the hairs are cailed “obscurely or distinctly articu- 
lated ;”’ and in one the word “flattened” is added—vwzwe Gray’s 
Botany. 
The fern Polvpodium incanum was collected on that ledge of 
sandstone running between the mouth of Mammoth Cave and 
Green river, and perhaps two hundred yards from the main 
entrance to the Cave. It was also found growing on a large 
sand rock on the west fork of the creek, which flows by the old 
iron furnace west of Nolin, and about one half mile above the 
furnace. I did not find it in any other locality in the county. 
I consequently did not find it growing in the moss on trees or 
the roots of trees. Those places where I did gather it were 
very dry; had as little opportunity for moisture as any places | 
could name. One was cn the edge of a sand rock among dried- 
up moss. With the other was found growing the Camplosorus 
rhizophyllus. Mr. W.T. Knott, of Lebanon, Kentucky, showed 
me a single frond Polypodium tncanum, which he had gathered 
among moss on earth beside a stream. Mr. John Williamson, 
of Louisville, has found this fern within twelve miles of that 
city. I found the Asplenium Bradleyi on a cliff at the head 
of Dismal creek. It grew on the face of a steep sand rock 
exposed to all the vicissitudes of the weather. This limited 
locality was the only place of its occurrence, according to my 
observation. It seems here as a relic of a former period, hav- 
ing perished from all these miles of cliff formation, and linger- 
ing here awhile before giving up the struggle of existence so 
far to the north. A hundred or so fronds were all I had heart 
to gather, not willing to hasten its extermination by any act of 
mine. 
The Zrichomanes radicans, by, a singular coincidence, was 
found growing near, on, or rather under, the same cliff. This 
rare fern I found in about a dozen localities in this county, 
always growing on the under side of an overhanging sand rock, 
where the moisture trickled down and kept the leaves bedewed 
with spray. I collected this fern also last year in the extreme 
eastern part of this State, in Carter county. The fronds evi- 
39 
