DESCKIPTIONS OF SPECIES. 75 



Cinnamomum Heerii Lesquereux? 



PI. XXX, figs. 5, 6. 



Cinnamomum Heerii Lesq., Am. Jour. Sci., vol. 27, 1859, p. 361; Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 

 1892, p. 105, pi. 15, fig. 1. 



I have questioned the reference of our specimens to this species for the reason 

 that they do not agree with Lesquereux's original figure/ although his subsequent 

 figure in the Flora of the Dakota Group (loc. cit.) agrees essentially with ours. In 

 almost every fossil species of the genus, however, a wide diversity in leaf form and 

 point of origin of the secondary nerves has been recognized by those who have 

 described them, and the difference in this instance is no greater than in many others. 

 One character in our specimens, however, which might perhaps serve to separate 

 them specifically, is the thin lateral nerves as compared with the relatively thick 

 midrib and petiole. 



Locality: Gay Head, Marthas Vineyard. Collected by David White. Speci- 

 mens in U. S. Nat. Mus. 



Cinnamomum membranaceum (Lesquereux) n. comb. 



PL XXIX, figs. 5, 6. 

 Paliurus membranaceus Lesq., Am. Jour. Sci., vol. 46, 1868, p. 101; Cret. FL, 1874, p. 108, pi. 20, fig. 6. 



The reference of these leaves to this species is made with but little hesitation, 

 although ours are somewhat larger and in fig. 5 more elongated; but the variation in 

 leaf forms displayed by many species of Cinnamomum is too well known to require 

 comment, and that these leaves all belong in this genus rather than in Paliurus 

 appears to be strongly indicated. Irregularity in outline and constriction in the 

 upper part, indicating a tendency to lobation, is also characteristic of several species, 

 and it is interesting to note that this tendency is well shown in a specimen referred 

 by Lesquereux to Cinnamomum sezannense Wat., & which might very well be con- 

 sidered as identical with ours. In all of these figures the lobation appears to be con- 

 fined to one side of the leaf, as often seen in our living Sassafras and as shown in one 

 figure of S. subintegrifolium Lesq. c 



Locality: Glen Cove, Long Island. Collected by David White. Specimens in 

 U. S. Nat. Mus. 



Cinnamomum sp. 

 PL XXX, fig. 7. 



This fragment apparently represents the base of a Cinnamomum leaf, with 

 prominently suprabasilar lateral nerves. The slightly outward-curving margin 

 may, however, indicate an irregular or lobate margin, and in that case the leaf would 

 be suggestive of Sassafras, but it does not seem possible to connect it satisfactorily 

 with any described species in either genus. 



Locality: Gay Head, Marthas Vineyard. Collected by David White. Speci- 

 men in U. S. Nat. Mus. 



a Trans. Am. Philos. Soc, vol. 13, 1869, pi. 23, fig. 12. 



&Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, pi. 12, fig. 6. 



c Ibid., pi. 14, fig. 2. 



