﻿596 Gilbert : Revision of the Bermuda Ferns 



pinnules, of which they nearly cover the entire upper edge. The 

 indusium also is not entire, but especially when young is erosed 

 similar to the edges of the pinnules. 



alsingen 



Rhizome stout, somewhat woody, repent, sending roots into 

 the crevices of rocks : stipes 5-9 in. long, dark ebonous, shining, 

 furrowed and at base flattened, with a few linear light brown 

 scales ; rachis conform, smooth ; frond 9—12 in. long, 5-7 in. wide, 

 tri-quadripinnate ; pinnae 3—6 in. long, lower opposite, upper al- 



ternate, segments %&-j4 ***• l° n g> % in. wide, sometimes cuneate, 



sometimes almost dimidiate, more often the latter with lower 

 edge straight and entire, upper and outer edge with 2-3 large 

 lobes ; sinuses shallow, generally an upper and a side lobe, edges 

 of barren pinnules finely erose with a vein running into each 

 tooth, venation flabellate, very distinct, texture thin, herbaceous : 

 sori straight whether long or short, when only one sorus generally 

 on side lobe ; indusium broad and finely erose like edges of pin- 

 nules. 



This variety is much larger than the species. A. bclliun as a 

 rule is very fully fruited even on the smallest fronds. A. Wal- 

 singense, on the contrary, fruits sparingly in comparison with the 

 large number of pinnules, which are generally two-lobed, having 

 an upper and a side lobe. The variety shows a preference for 

 bearing only one sorus which in that case is situated on the side 

 lobe, thus giving the pinnules a one-sided appearance and easily 

 distinguishing the variety. 



Pteris longifolia L. 

 Neither Lefroy nor Hemsley gives this species as native or 

 naturalized in Bermuda, but it is the one species which Reade adds 

 to the list. It is met with quite frequently about the city of Ham- 

 ilton, growing in the crevices of walls or wherever the wind may 

 have lodged a few spores. The species is well established and is 

 likely to increase rather than diminish. 



Pteris heterophylla L. 



This fern is found in several of the open caves and on the cliffs 

 of the Walsingham tract. Its local name is "parsley fern," and it 

 has been gathered so much for decoration that it is becoming 



