i8o THE RARITA'N FLORA. 



and slender for such large leaves, 12 to 15 pairs, branching from 

 the midrib at angles of 45° or slightly more, somewhat flexuous 

 and i regular in their course, camptodrome. Tertiaries generally 

 transverse, forming a coarsely quadrangular areolation. 



This species is quite variable, not only in size, but especially in 

 marginal characters, which show every gradation from nearly 

 entire forms to closely serrate forms; this is, however, a char- 

 acter which is more or less variable in all of the Raritan species 

 of this genus. This is a very distinct species, however, its 

 nearest ally apparently being Celastropkyllum lanceolatum, de- 

 scribed by Ettingshausen from the Cretaceous of Saxony,^ and 

 which Heer apparently recognized in his Greenland material.^ 



Numerous specimens from New Jersey are in Newberry's 

 (Collection, but none have the locality labels preserved. Two 

 specimens were obtained in recent collections from Milltown. 



Occurrence. — Milltown. 



Collections. — N, Y. Botanical Garden. 



Celastrophyllum Brittonianum Hollick. 



Celastrophyllum- Brittonianum Hollick in Newb., Fl. Amboy 

 Clays, 105, pi. 42, f. 37, 38, 46, 47, 1896. 



Ward, 15th Ann. Rept. U. S. Geol. Sur\^, 349, 358, 377, 

 378, 379. 1895 (nomen nudum). 



Mon. U. S. Geol. Surv. vol. 48: 493, pi. 107, f. 7, 1906. 



Description. — Leaves small, 4 cm. to 5 cm. in length, by 1.2 

 cm. to 1.5 cm. in breadth, lanceolate, or in some specimens some- 

 what spatulate in outline. Apex subacute. Base somewhat 

 decurrent and straight sided. Margins entire below, denticulate 

 above. Midrib stout. Secondaries numerous, somewhat irregu- 

 lar, of fine calibre but prominent, camptodrome. 



This species is clearly distinct from Celastrophyllum spatu- 

 latuin Newb., although it stands nearer the latter than to any 



^ Ettingshausen, Kreidfl. von Niederschoena, 1867, p. 260, pi. iii, fig. 9. 

 ^Heer, Fl. Foss. Arct., vol. VII, 1883, p. 40. pl- Ixiv. tig- 9a; pl- l^"^, tigs. 

 7, 8. 



