THE BOTANY OF BERMUDA. 123 



Picris hcterophylla, Linn. 



Luxuriant and abundant at the Church Cave, but not often found 

 elsewhere, and confined, as far as the writer's observation goes, to the 

 Walsingham tract. It is a Brazilian and Central American species, 

 but occurs in the West Indies also. 



P. aquilina, Linn. Bracken. 



General over the islands; especially abundant in Pembroke marsh. 

 Perhaps the most universal of all ferns. 



In addition to the above, Pteris longifolia, Linn.; P. quadri-aurita, 

 Ketz, and P. serrulaia, Linnf., were cultivated at Mount Langton, and 

 the first and last set out in suitable localities. 



Acrostichum aureum, Linn. Marsh fern. 



Abundant in brackish marshes, where it attains a great size. A 

 fern of wide diflusion, found both in Florida and the West Indies. 



{Chrysodiion vulgare, F^e.) 



Woodicardia Virginica, Smith. 



Found only in Pembroke marsh, and not very abundant. The young 

 plants have a general resemblance to Osmunda cinnamomeay Linn., but 

 may be distinguished at any stage by the loops in the veins parallel to 

 the midrib of the pinncc, which are radial in Osmunda. It is an Ameri- 

 can and not West Indian species. 



Asplenkim crenulatum, Fries. 



Found chiefly in the Walsingham tract, and not very common. {A. 

 serratttm, Lindl.) A species of the West Indies and Central America. 



A. Trichomaiies, Linn. 



Generally diffused ; common to all northern, temperate, and tropical 

 regions. 



A. dentatum, Linn. 



This pretty little fern is generally found at the mouths of caves, both 

 in the Walsingham tract and elsewhere. It fills a cave on Grace's 

 Island. It is a native of Florida and the West Indies. 



A. myriophyllum, Presl. [A. cicutarium, Swartz, Sieb., Mart., 360, 



Hook., Metten.; A. rhizophyUum^ Kunze, Hook.) 



The rarest of Bermuda ferns; only found about the Church Cave. It 



is certainly not what is usually labeled A. cicutarmm in collections. 



It is native to the West Indies and Southern United States. Bhizo- 



