ASPLEXIUM MARIKUM. 47 
luxuriates in warmth."* (Sowerby's* Ferns, by Mr. 
Charles Johnson.) 
Two sligbt varieties of this Fern have been noticed. 
One has the leaflets much narrower, and more pointed, 
so as to have a spear-head form, and has been named 
Asp^nium marinum var. acutum. The other variety 
was mistaken by Mr. Hudson for the Adiantum tra- 
peziforme, of Linnaeus, and was called by him Asple- 
nium trapeziforme, but it is only A. marinum with 
leaflets more deeply toothed and jagged, than ordinary. 
It was sent from Scotland by Dr. Alston to Mr. P. 
Collinson, and was subsequently found in that country 
in coves of the sea-shore near Wemys, by Mr. Lightfoot. 
* An evidence of its liking warmth is afforded by its being found a 
native not only of the south of France and Spain, and in northern 
Africa, the Canaries, and Madeira, but in no other part of Europe. 
