362 
THE FERN WORLD 
proceed to the margin of the pinnule, a venule or veinlet 
entering each marginal tooth or serrature. The sori in this * 
species deserve especial attention, as affording a means of 
distinguishing it from Adiantum-nujrum. Though elon- 
gated, as in the other Spleenworts, neither the sori nor the 
indusia which cover them are so much elongated as in 
Adiantum-nigrum. On this account, when the fructification 
is ripe and the indusia have been thrown off, the sori 
become bulged out and assume a roundish form ; and these 
round clusters do not generally, like the sori in Adianturn- 
nigrum, become confluent. Their margins often touch each 
other, but their individuality can be easily recognized. 
There are about a dozen varieties of the normal form of 
Asplenium lanceolatum. 
Distribution. — The recorded habitats of this Fern on the 
continent of Europe are iu Belgium, France, Germany, Italy, 
Portugal, Sicily, and Spain. It has also been found in the 
Azores, in Madeira, in Algiers, and in Tangier. In England 
its distribution is somewhat local. In the county of Corn- 
wall its habitats are, rocks on the coast at St. Ives, Land’s- 
End, and Penzance. In Devon it is found at Salcome and 
along the coast from Portlemouth to Start Point — both in 
sea caves by the beach, and on the rocks over the cliff head ; 
also, upon rocks on the banks of the rivers Dart, Plym, 
Tamar, and Tavy. It has also been found in the counties of 
Gloucester, Kent, Somerset, and Sussex. Since the publica- 
tion of the Second Edition of this work the interesting 
discovery of a new habitat of Asplenium lanceolatum has been 
courteously communicated to the Author. The Fern has 
been found growing in Yorkshire, on the borders of Derby- 
shire, by the Rev. R. Gatty, of Bradfield Rectory. The 
Author is satisfied, from an examination of fronds kindly 
forwarded to him by Mr. Gatty, as to the identity of this 
‘find’ with true Asplenium lanceolatum. In Wales it is 
