226 ADDENDA. 
and not intentionally introduced, as had been suggested 
in the Phytologist, being found to be widely dispersed, 
occurring in several places near St. Laurence, near St. 
Aubyns, and elsewhere. It is found on the moist banks 
of exposed lanes having a southern aspect. I learn from 
N. B. Ward, Esq., that in one of two localities in which 
he has seen it, the fern had been abundant in the early 
spring, but being annual like some of our smaller trefoils, 
it had withered by the end of July. It exists, no doubt, 
in other parts of the island than those in which it has as 
yet been met with, but being of very small size and grow- 
ing on banks covered with other vegetation, is easily over- 
looked. 
Page 122, under LASTREA SPLNULOSA, insert: 
This fern undoubtedly occurs in Scotland. I have re- 
cently been favoured with specimens gathered at Dunkeld, 
in Perthshire, by Mr. A. Tait, of Edinburgh, who states 
that it was growing sparingly among a profusion of L. 
dilatata, and under apparently identical conditions. 
Page 135, under LASTHEA FCENISECII, insert: 
W. H. Allchin, Esq., has found near Festiniog, in 
N. Wales, a small form of this plant, but having the parts 
considerably narrowed, which seems to connect the 
ordinary form of the species with a narrowed Madeira 
form which I suppose to be the var. productum of 
Mr..Lowe. 
The following additions to the table given at pp. 18 
19 are necessary : 
Gymnogramma leptophylla . occurs in j p rov ' ^ Q' 
Lastrea spinulosa . . occurs in Prov. 15 (!) 
Pteris aquilina . . . occurs in Prov. 24 (!). 
