194 ROCHESTER ACADEMY OF SCIENCE. [June 22, 
the shade of rocks, sometimes in pockets on the rocks in which a little 
soil is lodged. Fuller mentions as a station ‘‘ the east side of Ironde- 
quoit Bay, or rather on a small stream emptying into the bay, at the 
eastern end of the Float Bridge.’ Fish gives the same station, and 
also mentions the town of Gates and the “Glen” at Seneca Point, on 
Canandaigua Lake. At the latter place a few plants of it may be found. 
Phegopteris, Fée. Brrcu-FErRN. 
18. A. polypodioiwes, Fee. Absent. 
19. P. hexagonoptera, Fée. A rather common fern in thin 
woods. Along the lake shore, from the river to the “ Sea Breeze,” it 
is found sufficiently plentiful. 
20. P. Dryopteris, Fée. Fish makes this species as “‘ not rare,” 
but gives no stations for it. Professor Lennon found it in the ravine at 
Holley. 
Aspidium, Swartz. SuHietp Fern, Woop FERN 
21. A. Thelypteris, Swartz. The Swamp Shield Fern is com- 
mon in moist or marshy grounds. Very generally distributed. 
22. A. Noveboracense, Swartz. The New York Shield Fern 
1s common in moist woods and moist, shady places. 
23. A. fragrans, Swartz. Absent. 
24. A. spinulosum, Swartz. This graceful and variable ever- 
green species, the Prickly Shield Fern, in some of its forms is a common 
inhabitant of woods, thickets and other shady places throughout our 
regions. It is reported as found in this vicinity by J. B. Fuller, Geo. 
T. Fish and Dr. Searing. Mr. Fuller informs me that he has not 
attempted to determine the variety or varieties of his specimens; as Mr. 
Fish was a co-collector with Mr. Fuller, it may fairly be presumed that 
his specimens are in a similar state. Dr. Searing, however, gives this 
the typical form, as well as the two following. In my own collection I 
have specimens which I believe may be referred to the two following 
varieties, but none of the typical species. W. H. Lennon reports A. 
spinulosum from Holley, without designating species. 
25 A Sspinulosum, var. intermedium, D.C. Eaton. This is 
undoubtedly the most common form in this region of the Prickly Shield 
Fern, or Common Wood Fern. 
26. A. spinulosum, var. dilatatum, Hooker. This variety, 
as well as the one above, is reported by Dr. Searing. It appears in my 
own collection and is marked as having been found at Charlotte. 
