A. 
A. 
61 
TER, on the Tucquan, Porter; Yorx, York Furnace, Dzffen- 
baugh ; SOMERSET, Laurel Hill, Brown and Saunders. 
pinnatifidum Nutt——On rocks. Yorx, York Furnace, 
and LANCASTER, on the Tucquan and at Georgetown, Por- 
ter; FAYETTE, Shafer. 
platyneuron (L.) Oakes.—On rocks and shaded slopes. 
PIKE, Brown and Saunders; MONROE and NORTHAMPTON, 
Porter ; Bucks ; DELAWARE, (Smith’s Catalogue); CHES- 
TER, (Flora Cestrica); LANCASTER, FRANKLIN and Hunv- 
INGDON, Porter ; ALLEGHENY, Shafer. 
Ruta-muraria L.—On limestone. NORTHAMPTON, 
Easton, Porter ; Bucks, Fretz ; CHESTER, (Flora Cestrica) ; 
LANCASTER; FRANKLIN; HUNTINGDON and BLAIR, Por- 
ter ; CENTRE, Rothrock. 
Trichomanes [L,.—On limestone rocks. LACKAWANNA, 
Dudley ; PIKE, Brown and Saunders ; MONROE, NORTH- 
AMPTON and Bucks, Porter ; DELAWARE, Smith; CHES- 
TER (Flora Cestrica); LANCASTER; FULTON, Saunders ; 
HunTINGDON, Porter; SUSQUEHANNA, Graves; VENANGO, 
Bell; BEAVER and ALLEGHENY, Shafer. 
Camptosorus Link. 
C. rhizophyllus (L.) Link.—On dry rocks, preferring lime- 
W. 
stone. MONROE and NORTHAMPTON, Easton, /orter ; 
Bucks, Moyer ; DELAWARE (Smith’s Catalogue) ; CHESTER 
and MONTGOMERY, Saunders ; PIKE, Brown and Saunders; 
LANCASTER, YORK, FRANKLIN and HUNTINGDON, Barre 
Forge, Porter; Fuuron, Saunders; SUSQUEHANNA, 
Graves; SULLIVAN, Smith; CENTRE, Rothrock ; SOMER- 
sET, Brown and Saunders; BEAVER and ALLEGHENY, 
Shafer ; VENANGO, Krout ; ERIE, Fenno. 
Woodwardia J. E. Smith. 
areolata (L.) Moore.—In swamps and moist soil. Bucks, 
Bristol, Difenbaugh ; DELAWARE, Tinicum. 
