SAUCALES. Ill 



terial is somewhat imperfect and in some cases it is difficult to 

 distinguish it from some of the forms referred to the same 

 author's Jtiglans crassipes, although the latter is on the whole a 

 much larger form with a narrower base and less oblong in 

 outline. 



Juglmis arctica is oblong-ovate in outline with an obtusely 

 pointed apex and a rounded, generally inequilateral base. The 

 petiole and midrib are stout. Secondaries numerous, well 

 marked, parallel, camptodrome. Size varying in complete speci- 

 mens from 9 cm. to 15 cm. in length and from 3 cm. to 6 cm. in 

 width. The single, nearly-perfect leaf found in the Raritan at 

 Woodbridge, which Newberry provisionally refers to^ this species, 

 is about 15 cm. in length by 5 cm. in breadth, oblong-ovate in 

 outline, with a rounded, somewhat inequilateral base, a stout 

 petiole and midrib, about 13 pairs of subopposite to alternate 

 camptodrome secondaries which branch from the midrib at a 

 wide angle. There seems to be little doubt of the correctness of 

 Prof. Newberry's determination. 



A nut and catkins are associated with the leaves at the type 

 locality in the Atane beds of Greenland which confirm their ref- 

 erence to this genus. The species has a wide range, having been 

 recorded from Marthas Vineyard, Block Island, Staten Island, 

 New Jersey, North Carolina, South Carolina and Kansas. 



Occurrence — ^ Woodbridge. 



Collections. — N. Y. Botanical Garden. 



Order SALICALES. 



FaiTiily SALICACE^. 



Genus POPULUS Linne. 

 (Sp. PI, 1753, p. I034-) 



PoPULUS APICULATA HolHck. 



Plate XI, Fig. 4. 



Populus apiculata Hollick, Trans. N. Y. Acad. Sci., vol. 12:4, 

 pi. 3, f. 2, 1892; U. S. Geol. Surv. Mon. 50:49, pi 7, 

 f. 28, 2g, 1907 ( ?) 



