74 DESCRIPTION OF SPECIES. 



Liriodendron intermedium, Lesqx. 

 " U. S. Geo). Rep.," vi, p. 93, pi. xx, fig. 5. 



No other specimen has been found as yet than the fragmentary one 

 described in the "Report." 



Liriodendron giganteum, Lesqx. 

 • U. S. Geol. Rep.," vi, p. 93, pi. xxii, fig. 2. 



A number of well-preserved specimens, recently obtained in Kansas, 

 distinctly display the characters of this species originally described from 

 a fragment, the upper lobe of a leaf only. The leaves are very large, 20 

 centimeters broad between the lower lobes, which are broad (6 centimeters), 

 oblong, rounded or obtuse, at right angles to the medial nerve; upper lobes 

 more oblique, shorter, narrowed and rounded to an obtuse point, joining 

 the lower in a narrow deep sinus at a short distance (2 centimeters) from 

 the thick medial nerves; lateral nerves parallel, nearly at equal distances, 

 slightly oblique, curved down in joining the medial nerve. 



By the form of the leaves this species is more than any other related 

 to the living L. Tulipifera. As far as can be seen from the fragment of 

 L. intermedium, this last species differs much from L.giganteum, especially 

 by the deeply emarginate leaf, the very oblique upper lobes at a great dis- 

 tance from the lower ones. The facies of the leaves of these two species 

 is far different. 



Hab. — Two miles from Glasco, Kansas. The specimens, Nos. 206, 

 513, 535, found by Chs. Sternberg, like those of the four following species, 

 belong to the collection of the Museum Comp. Zool., Cambridge. 



Liriodendron acuminatum, Lesqx. 



"Bull. Mua. Comp. Zool., Cambridge," vol. vii, No. 6, p. 227. 



Leaves small, about half as large as those of the preceding species, cut into two 

 pairs of narrow linear accumiuate lobes all arched upward, about 10 to 12 centimeters 

 long. 



A remarkable species; the lobes, 1 centimeter broad, have only a 



medial nerve. 



Hab. — Same location as the preceding. Specimens Nos. 476, 504, 504a. 



Liriodendron cruciforme, Lesqx. 

 Ibid., p. 227. 



Leaves large ; upper lobes broad, square or equilateral, at right angles to the broad 

 midrib; lower lobes narrow, linear, acuminate, much longer and arched upward. 



