DESOKIPTION OF SPECIES. 209 



LlRIODENDRON PINNATIFIDUM Lesq. 



PI. XXVII, Figs. 4, 5. 

 Cret. ami Tert. FL, p. 75 ; Bull. Mus. Comp. Zool. Cambridge, vol. 7, jit. 6, 1881, p. 227. 



Leaves coriaceous, with sm-face polished, huear, piniiatcly ahernately 

 lobed; hibes short, obtuse truucate or auguhu-, abrupth" luuToAved into an 

 obtusely lobate or subtruncate apex, separated by broad, uuecpud sinuses. 



This form is very peculiar; but althoug-li the specimen is frjio-mentary, 

 it appears clearly defined ;ind referable to this g-enus. Tlu* fra<^ incut pre- 

 served is 10"" long, 4"" broad at the middle, a little narrowed upward to a 

 truncate apex and downward to the rounded base. It is cut on eacli side 

 into three alternate short obtuse or truncate lobes, separated by broad, flat 

 or half round siiuises, the lower of which are much shorter than the upper 

 ones. The lateral nerves are close, luimerous, camjitodronie, often forking 

 near the borders, where they become effaced, their angle of divergence 

 being M)°. 



The fragment (Fig. .5) appears to be referable to this species, tliough its 

 nervation, which is of the same ty23e as that of PI. XXV, Fig. 4, is differ- 

 ent from that of PI. XXVII, Fig. 4. Tlie nervation of this last fragment 

 is of the same character as that of L. ncmuiJatiMn as seen in PI. XXV, Figs. 

 2, 3, where the nerves are (piite as proximate at the same angle of diverg- 

 ence, forked and effaced near the borders. 



Habitat: Two and one-half miles from Grlascoe, Kansas. Nos. 526 

 and ,531 of the Museum of Comparative Zoology of Cambridge, Massa- 

 chusetts. 



LlRIODENDRON SNOWII, Sp. UOV. 



PI. XXIX, Figs. 1, 2. 



• 



Leaves large, ovate in outline, emarginate at apex, ))innately, horizon- 

 tally divided into linear, obtuse lobes, distant and distinct for their wliole 

 length, attached by their whole base to the thick median nerve-like }»innules 

 of a compound leaf, curved down at base or slightly decurring to the nnd- 

 rib, inclined upward and somewhat enlarged to their outer end, each with 

 one or two secondaries, parallel, the upper near to the borders, tlie lower 

 stronger, more prolonged, both joined and anastomosing witli thin, margi- 

 nal tertiaries which follow close to the borders in festoons. 



The leaves are so remarkalily different from those of the normal form 

 of Liriodendron, that it is at first difficult to see how they are identified 

 with the genus. Nevertheless, considering the divisions and subdivisions 



MON XVII 14 



