

CATALOGUE OF PLANTS. 111 
known to our limits, but turniug up frequently elsewhere. B*, 
rare; Cedar Swamp:— MM, two fronds from Stoneham, prob- 
ably in the Reservation limits near Bear Hill, in the Hitching 
collection in the Appalachian Club Herb. 
A. Neveboracense, Swz. Woop Frrn. 
Common in various situations in low ground. 6b* and M*, 
common. Doubtless in S and BB. 
A. spinulosum, Swz. 
Damp woods. B* and MN, occurs. 
Var. intermedium, D. C. Eaton. 
Swamps, with the type. M*, occasional ; Pine Hill 
woods, etc. 
Var. dilatatum, Hook. 
With the type. 6* and M, occurs. 
A. Boottii, Tuck. 
Swamps with A. spinulosum and A. cristatum. B*, rare; 
damp woods: — M*, rare; Pine Hill swamp, etc. One of our 
choicest ferns, never plentiful anywhere, and should be care- 
fully protected. 
A. cristatum, Swz. 
Swamps; not plentiful anywhere. B*, damp woods, W. 
Quincy, etc. : — M*, Pine Hill swamp. 
Var. Clintonianum, D.C. Eaton. 
Low swamps with the type; rare. M*, Medford. 
A. cristatum X marginale, Davenport.t 
Rocky and swampy woodlands; should be looked for where- 
ever the parent species, cristatum and marginale, are found. 
M*, Pine Hill swamp; two plants only were found, and the 
spot has since been probably destroyed. 
A. marginale, Swz. 
Rocky woods and swamps; frequent. B*, frequent; Hawk 
Hill, ete. : — M* and S, common in woods. 
t See Bot. Gaz. xix. 494. 
