DESCRIPTIONS OF SPECIES. 65 



Locality: Glen Cove, Long Island, PL XXI, fig. 5. Collected by Arthur Hol- 

 lick. Specimen in Mus. New York Bot. Gard. 



Dosoris Island, Long Island, PL XXI, fig. 6. Collected by Bailey Willis. 

 Specimen in Mus. New York Bot. Gard. 



Magnolia pseudoacuminata Lesquereux. 



PL XVIII, figs. 2, 3. 



Magnolia pseudoacuminata Lesq., Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 199, pi. 24, fig. 2. 



I have found more or less difficulty, by reason of the fragmentary character of 

 most of our specimens, in making a satisfactory distinction between this and the 

 closely allied species tenuifolia and amplifolia. In fact, even in the more perfect 

 specimens figured by Lesquereux a to represent the three species the specific dis- 

 tinctions are not very apparent. 



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

 mens in U. S. Nat. Mus. 



Magnolia amplifolia Heer. 



PI. XVIII, fig. 1. 



Magnolia amplifolia Heer, Neue Denkschr. Schw. Gesellsch. Naturwissensch., vol. 23 (Kreide-Fl. Moletein) 

 1869, p. 21, pi. 8, fig. 1 ; pi. 9, fig, 1. 



This specimen, although unquestionably identical with Heer's species, as may 

 be seen by comparison with his figures, more especially with his fig. 1, pi. 9 (loc. cit.), 

 might readily be confused with certain allied species, as previously noted in my dis- 

 cussion of M. pseudoacuminata Lesq. The close similarity between these two spe- 

 cies was also noted by Lesquereux, 6 who, however, regarded the thick midrib and 

 curved apex of amplifolia as specifically distinguishing features, both of which are 

 well shown in our specimen. 



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

 men in U. S. Nat. Mus. 



Magnolia Lacoeana Lesquereux. 



PL XVII, fig. 2. 



Magnolia Lacoeana Lesq., Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 201, pi. 60, fig. 1; New- 

 berry, Mon. U. S. Geol. Survey, vol. 26 (Fl. Amboy Clays), 1895 (1896), p. 73, pi. 15, figs. 1, 2. 



The broad, almost orbicular form of this leaf serves to identify it with this 

 species, although it may be said that some forms referred by Heer to M. Capellinii 

 are strikingly suggestive. It is unfortunate that both in our specimen and in the 

 one figured by Lesquereux the apex is wanting, which, however, he describes as 

 " obtuse or abruptly pointed." 



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

 men in U. S. Nat. Mus. 



a Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, pi. 24, figs. 1-3. 



b Ibid., p. 200. 



cFl. Foss. Arct., vol. 6 (abth. 2), pi. 24, fig. 3; pi. 45, fig. 1. 



MON L — 06 5 



