PLANTS OF SOUTHERN NEW JERSEY. 123 



Casual north, but very rare in our district, known only from 

 Riddleton, Salem Co., where it was collected in low woodland. 



Spores Mature. — Early June, during- a very brief period. The 

 fronds arise in spring and perish during the summer. 

 Middle District.— RiM\cion. 



Botrychium obliquum Muhl. Ternate Grape Fern. 



Botrychium ternatum obliquum "Muhlenberg" Willdenow, Sp. PI. V. 63. 



1810 [Pennsylvania].— A. Brown, Bull. Torrey Club VII. 114.— Britton 



305- 

 Botrychium obliquum Barton II. 205. 

 Botrychium lunarioides Knieskern 41. 



Woods and open ground throughout, but rare in the Pine Bar- 

 rens. 



Spores Mature. — Early September to late September, rarely in 

 October or November. Fronds arise in midsummer, the fertile 

 portion evergreen, generally persisting into the following spring. 



Middle District. — Monmouth Co. (K), New Egypa, Birmingham, Taunton, 

 Delaire, Oaklyn (S), Haddonfield (UP). .Lawnside (S), Orchard (S), Lin- 

 denwold, Clarksboro (UP), Tomlin, Swedesboro, Glassboro, Dividing Creek, 



Coast Strip. — Pt. Pleasant (S), Manahawkin, Surf City (L), Ship Bottom 

 (L), Atlantic City, Ocean City (S), Anglesea (UP). 



Pine Barrens. — Albion, Egg Harbor City. 



Cape May. — Dennisville (S), Sea Isle Jnc, Anglesea Jnc. (S), Cold Spring 

 (OHB), Cape May (UP). 



Botrychium obliquum dissectum Spreng. Feathery Grape Fern. 



Botrychium dissectum Sprengel, Anleit III. : 172. 1804 [Virginia]. 

 Botrychium ternatum dissectum Britton 305. 



Frequently occurring with the preceding, into which it seems 

 to merge. 



Spores Mature. — Early September to late September, rarely in 

 October, apparently beginning to mature slightly later than the 

 last. Life history of fronds the same. 



Middle District.— Mediord (Poyser), Oaklyn (S), Clarksboro (UP), Tom- 

 lin, Salem (S). 



Coast Strip.—Suvi City (L), Ocean Beach (UP). 



Pine Barrens. — Albion, Mays Landing (S), Egg Harbor City (UP). 



Cape May.— Cold Spring (OHB). 



Botrychium virginianum (L.). Rattlesnake Fern. 



Osmunda virginiana Linnaeus, Sp. PI. 1064. 1753 [Virginia]. 

 Botrychium virginianum Britton 305. 



