7 O BRITISH FERNS.— SUB-ORDER II. TRIBES 8 , 9 . 
30 English, 7 Welsh, and 7 Scotch counties, it 
is nevertheless rare in some of them. Years ago 
a single plant was found by the late Mr. Joseph 
Sidebotham, on Col wick Park wall, in Nottingham, 
and a second plant was on the sunk fence wall at 
Highfield House; but both of these plants are now 
dead. It had been seen years before in Notting- 
ham Park and at Papplewick, but is destroyed in 
these places. The Lancashire plants are the 
variety crenatum. In Ireland it is more or less 
abundant in fourteen counties, and is also found 
in the islands of Jersey, Anglesea, Arran, and the 
Isle of Wight. Widely spread throughout Europe, 
and an inhabitant of Madeira, Azores, Canaries, 
Cape de Verde Isles, India, Asia Minor, Brazil, 
etc. In Lancashire it is found locally on Pendle 
Hill, and at Browsholme Hall, near Clitheroe. 
In Madeira there is a very similar fern on a 
much larger scale, known as Ceterach aureurn. 
This I have crossed with the English species, but 
the seedlings are yet too small to speak about 
positively. The Barony of the Barren, in County 
Clare, is extraordinarily rich in varieties, some very large, and 
some exceedingly distinct. Mr. P. B. O’Kelly, of Glanarra 
House, Ballyvaughan, has sent me more than a dozen distinct 
varieties, and all good characteristic plants. Mr. O’Kelly’s name 
is attached to all his Burren forms. 
Varieties. 
1. angustatum, O' Kelly. 2 xo| inches. Concave. 
2. bitidum, O' Kelly. Bifid. 
3. crenatum, Moore. Found in Lake district, by Miss Beever ; 
near Clitheroe, by Mr. Garnett and myself ; Crickhowel, by Mr. J. 
R. Cobb and myself; Devon, Mr. J. R. Gray; Perth and Kircud- 
bright, by Mr. W. G. Johnstone ; Carberry Island, by the late 
Colonel A. S. H. Lowe ; Waterford, by Mr. J. R. Kinahan ; but 
by far the best forms in the Burren, by Mr. O’Kelly. The margin 
crenate. 6 X i| inches. 
4. crenatum-major, O' Kelly. 8x ij inches. 
5. crenulare, Lowe (crenatum minor, O' Kelly). 2^X of inches. 
Concave, very pretty. 
6. crispum-major, O' Kelly, ioi X 1 J inches. A giant. 
7. cristatum, O' Kelly. Crested. 
8. decorum, O' Kelly. Stiffer texture and rugose. 8x1 inches. 
9. densum, O' Kelly. 3 x of inches. 
10. densum- varians, O' Kelly. 4X0J inches. 
11. depauperatum, Wollaston. Found at Kilkenny, by Colonel 
Buchanan. 
12. giganteum, O' Kelly, y\ x 1 inches. 
13. grandiccps, O' Kelly. 4X0J inches. A fine capitate form. 
Fig. 27. — Frond 
of Aspleniuin 
Ceterach. 
