200 THE FLORA OP THE DAKOTA GROUP. 



same work^ have a still greater affinity to this species in size and form. 

 They are, however, not acuminate but merely pointed. 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4079 of the 

 collection of Mr. R. D. Lacoe. 



Magnolia amplifolia Heer. 

 PI. XXIV, Fig. 3. 



Kreidell. v. Moletein, p. 21, PI. viii. Figs. 1, 2; PI. ix. Fig. 1, 



Leaves large, subcoriaceous, entire, elliptical, short pointed; median 

 nerve very thick; secondaries strong, much curved toward the borders, 

 camptodrome. 



This leaf is 18"° long and G"" broad, with the median nerve more than 

 3™"' in diameter toward the base, which is much smaller than the two figured 

 by the author. Nevertheless the identification of the Kansas leaf with those 

 from Moletein seems legitimate. Not only is the form of the leaves the 

 same but even their inclination to one side ; and the secondaries, about of 

 the same nuinlier (twelve pairs), are of the same character, strong and more 

 open from the middle to their point of union to the median nerve, whicli 

 they reach by a short, downward curve. I'he secondaries are also some- 

 times separated by thinner, shorter tertiaries. Few, however, are seen in 

 the figures of the Moletein Flora, there apparently omitted, as the nervilles 

 are figm-ed only upon a small fragment of PI. viii. Fig. 1, showing these 

 to be broken in the middle by divisions at right angles, as in the American 

 specimens. Heer compares his species to L. acuminata L., to which indeed 

 it is closely related. But the differences may be easily remarked in com- 

 paring Figs. 2 and 3 of PI. XXIV. Heer remarks that tiie secondaries in 

 M. amplifolia are thin as compared to the median nerve, and especially 

 toward their ends tliey become so reduced that they can scarcely be followed 

 with the eye. On the American specimens the secondaries are rather tliick 

 in the lower part, becoming gradually very thin in the upper. The s])ecies 

 essentially differs from M. pseudoacuminata by the thickness of tlie midrib 

 and the short, cxirved point. 



Habitat: Pipe Creek, Cloud County, Kansas. No. 4127 of the col- 

 lection of Mr. R. D. Lacoe. 



'Fl. Fos8. Arct., vol. G, Abth. 2, PI. xxv, Figs. 1,2, 3. 



