Hudson’s spleenwort. 
251 
the immediate neighbourhood, I discovered it in one or two 
other places, and in one of these abundantly, covering the dry 
surface of a rock completely sheltered from rain, and, though 
its roots are almost exposed and a slight pull detaches it from 
the rock, it grows in the greatest luxuriance, one frond which I 
gathered measuring eighteen inches in length. I have observed 
in all the fronds of this fern which I have gathered, that the 
rachis is throughout its entire length furnished with linear scales, 
a character which best distinguishes it in all its forms, and even 
in its very young state, from Asplenium Adiantum-mgrumr^ 
I am indebted to the Botanical Society of London for a very 
beautiful series of specimens collected by Mr. Thwaites in this 
locality, and Mr. Thwaites has most obligingly sent me his own 
magnificent specimens for inspection. 
Kent. — I am indebted to Mr. E. Jenner for specimens from 
rocks facing the High rocks near Tunbridge Wells, and, con- 
ducted by that gentleman, 1 had the pleasure of seeing it still 
growing there in August, 1843. 
Merionethshire. — The vicinity of Barmouth seems a very 
favorite locality for this fern. Before I was at all acquainted 
with ferns, I found it in profusion on an old stone wall between 
Barmouth and Dolgelly, and was struck with its similarity to, 
yet distinctness from, Asplenium Adiantum-nigrum, I afterwards 
found it in many localities near Barmouth, particularly on rocks 
close to the road, on the left on leaving the town for Dolgelly. 
Pembrokeshire. — Mr. Lees informs me he found it on Ram- 
say Island, opposite St. David’s, on rocks a little south of the 
only habitation on the island. 
Sussex. — I am indebted to Mr. S. L. Howard for a specimen 
found on the High rocks, Tunbridge Wells, and to Mr. E. Jen- 
ner for others from the same station : under the guidance of 
the last-named gentleman, I had the pleasure of seeing it grow- 
ing here in August, 1843. Mr. Borrer and Mr. Jenner have 
also observed it on rocks in Eridge-park. 
Its European range is very limited. Sadler gives it as a na- 
tive of France, but it does not appear in the ^ Flore Fran^aise,’ 
* Phytologist, 75. 
