_— 5 ei 
4 
. 
i 
110 METROPOLITAN PARK FLORA. 
A. ebeneum, Ait. Exsony SPLEeENWoRT. 
Occasional on Knolls and ledges. B*, frequent; by Mona- 
tiquot Stream; rocky places on Great Blue Hill, ete.: —M*, 
occasional; Cascade region; abundant on Bear Hill, ete. 
A. thelypteroides, Michx. 
Rich woods. #, rare; near Cedar Swamp:— M, found in 
the Pine Hill woodlands, some years ago. 
A. Filix-foemina, Bernh. Lapy Fern. 
Common in a variety of forms in moist woodlands, the var. 
angustum, D. C. Eaton, in dry exposed situations. B*, fre- 
quent; by Old Furnace Brook; N. and E. of Babel Rock, 
etc. ; var. angustum, D. C. Eaton, slope of Hawk Hill:— 
M*, common in damp woods :— BB, occurs. 
PHEGOPTERIS, Fée. Brrcu Fern. 
P. polypodioides, Fée. 
Occasional in damp woods and ravines. B*, occurs: — WU, 
rare. 
P. hexagonoptera, Fée. 
Damp woods; rare. 6B*, rare; base of Hawk Hill, ete. :— 
M*,rare; damp woods, E. slope of Bear Hill, and two sta- 
tions in Medford. 
P. Dryopieris, Fée. 
Damp rocky woods; rare. MM, reported as abundant in one 
locality, Melrose. 
ASPIDIUM, Swz. Surerp Fern. 
A. Thelypteris, Swz. 
Common in various situations in low ground. B* and M*, 
common. 
A. simulatum, Davenport.} 
Low moist woodlands with A. Thelypteris and A. Novebora- 
cence ; it thrives best in shaded situations, fruiting abundantly 
where A. Thelypteris is nearly always sterile; as yet not well 
t+ See Bot. Gaz. xix. 495. 

