PLANTS OF SOUTHERN NEW JERSEY. 133 



the herbarium of the late Isaac Burk is labeled "deep swamps in 

 Jersey." As Mr. Burk did most of his collecting in south Jersey, 

 it is probable that this specimen came from somewhere in our 

 region. 



POLYSTICHUM Roth. 

 Polystichum acrostichoides (Michx.). Christmas Fern. 



Nephrodium acrostichoides Michaux, FI. Bor. Am. II. 267. 1S03 [Pennsyl- 

 vania, Carolina and Tennessee]. 

 Aspidium acrostichoides Knieskern 41. — Britton 310. 

 Aspidium acrostichoides schweinitsii Britton 310. 



Common northward, but only casual within our range and re- 

 stricted to the Middle district, except an isolated colony which I 

 discovered at Speedwell in the heart of the Pine Barrens and 

 one at Cape May. 



Spores Mature. — Early June to late June; indusia soon 

 withering. Fronds evergreen, except the fertile portion which 

 withers during the winter. 



Middle District. — Farmingdale, Shark River (UP), New Egypt, Borden- 

 town, Birmingham, Springdale (S), Woodbury, Sewell (S), Swedesboro, 

 Salem (S). 



Pine Barrens. — Speedwell (S). 



Cape May.— Cape Miay (O. H. Brown). 



DRYOPTERIS Adanson. 



Dryopteris noveboracensis (L.). New York Fern. 



Polypodium novehoracense Linnaeus, Sp. PI. 1091. 1753 [Canada]. 

 Aspidium Novehoracense Knieskern 41. — Britton 309. 



Common northward; southward restricted to the Middle, 

 Coast and Cape May districts, where it is less common. 

 Spores Mature. — Late June into August. 



Middle DufnV^— Farmingdale, Allaire (S), Birmingham, Haddonfield (S), 

 Westville (UP), Mickleton (H), Lawnside (S), Sewell (S), Andrews, 

 Swedesboro, Yorktown, Dividing Creek. 



Coast Strip. — Coxes, Manahawkin, Ocean City (UP). 



Cape May.— Cape May (OHB). 



Dryopteris thelypteris (L.). Marsh Fern. 



Acrostichum Thelypteris Linnseus, Sp. PI. 1071. 1753 [Europe]. 

 Aspidium Thelypteris Britton 308. 



Throughout, but not common in, the Pine Barrens. 

 Spores Mature. — Mid-August well into September. 



