with Descriptions of New Sp< c& s oj 1 13 



terminating in the sinus of the superior Lobe; secondary nei 

 gently arching upward, simple or forked near the extremities, a few 

 more delicate ones alternating with the stronger. 



This leaf is considerably larger tlian that of /.. Hfeehii Beer., 

 less deeply lobed, and the lobes more broadly rounded. In it- 

 general aspect this species approaches much nearer the living 

 tulip-tree, and the Tertiary species of Europe i /.. Procaa 

 TTng.), than that described by Professor Eeer from the coll 

 tions of Dr. Hayden (L. Meekii). The leave- of the former 

 species are, however, generally more deeply lobed, and tin- 

 lobes are acute, but I have collected leave- of /.. T\ '', 

 small size with all the lobes rounded, and in all n re- 



markably like that under consideration. < m the whole, thi 

 so like the leaf of our tulip-tree that there can be little doubt 

 that it represents a species of the same genus which grew on 

 our continent at the commencement of the Cretaceous 

 This is one of the most important facts deduced from the coll 

 tions of Dr. Hayden, for the genus LiriocL ndron is now re] 

 sented but by a single species, which is confined to No 

 America. During the Miocene Tertiary epoch, however, it 

 formed part of the flora of Europe, as well preserved leave 

 a species very closely allied to, if nol identical with the living 

 one, grew in Italy, Switzerland, and Iceland. 



Thus this comes into the interesting ry of Magno 



Liquidambi 1 1\ Sassafras^ &c; genera which flourished both in 

 Europe and America during the Miocene epoch, bul which 

 have Ions since ceased to exist on the European continent. 



These specimens also teach us the still more int< i truth, 



that Ziriodendron, Sassafras^ Magnolia^ Qu ■ V 



l,inn.<. Populu8, and many others of our li%'i 

 back on this continent to a period long anterior to tl 

 the Tertiary age, and, having Burvived all the chanj 

 incalculable interval, now form the mo 



in our existing forests. 



