72 PINACEAE 



Tertiary, common: Cretaceous, less common: Older Formations, 

 scattered. 120-210 days. Sea level-2,100 ft. 



7. P. serotina Michx. In sandy swamps, sometimes in drier 



situations: Southern N. J., to Va. and Fla. 



N. J. Swedesboro, Gloucester Co. and Town Bank, Cape May Co. 



Tertiary, very rare : Cretaceous, a few trees : Older Formations, O. 

 172 days. About sea level. 



8. P. Taeda L. Southern N. J. to Fla. and Texas, north to Ark. 



N. J. Cape May County. 



Tertiary, limited to Southern N. J.: Cretaceous, o: Older Forma- 

 tions, o. 182-220 days. About sea level. 

 The Scotch Pine, Pinus sylvestris L., has been reported as an established escape. 



2. Larix [Tourn.] Mill. 

 1. L. laricina (Du Roi) Mill. In swampy places : Newf. to the N. 

 W. Territory, south to N. J., Md., Pa., Ind., and Minn. 

 Conn. Rare in the eastern part, perhaps absent from the coast, 



increasing northwestward. 

 N. Y. Throughout, except the lower Hudson Valley, L. I., and 



S. I., increasing northward. 

 N. J. Ironia and Lake Hopatcong, Morris Co.; Closter, Bergen 



Co.; New Durham, Hudson Co.; increasing northward. 

 Pa. Pike, Carbon, Monroe and Luzerne counties, increasing 



northward. 



Tertiary, o: Cretaceous, o: Older Formations, common. Not 

 south of the moraine except in Pa. 1 17-160 days. Sea level- 

 1,933 ft. 

 The European larch, L. decidua Mill., has been reported as an established escape. 



3. Picea Link. 



Cones ovate, the stalks strongly incurved; cone-scales erose or dentate; 



leaves glaucous, about 14 mm. long or less, somewhat appressed. I. P. mariana. 



Cones oblong-ovate; cone-scales entire or denticulate; leaves yellow- 

 green, about 10 mm. long, spreading. 2. P. rubens. 



I. P. mariana (Mill.) B. S. P. Swampy places, sometimes on 

 hillsides: Lab., south in the mountains to W. Va., N. Car., 

 westward to Alberta and N. W. Territory. 

 Conn. Litchfield, Litchfield Co. 

 N. Y. Greene, Delaware and Ulster counties. 

 N. J. Reported from Ironia, Morris Co.; perhaps in Sussex Co. 



