208 THE FLORA OF THE DAKOTA GROUP. 



lower lobes, like that often observed in the leaves of Aralia. It is an 

 anomaly in the genus Liriodendron. Nevertheless a sul)ilivisi()U soiuew hat 

 like that of this leaf is remarked in the leaf of L. is/ditdiciini Saj). & Mar. 

 (Fl. de Meximieux, PI. xxxiii, Fig. a), considered l)y some authors as a 

 variety of L. Procaccinii Ung. It has the lower lobes cut into two sharply 

 pointed lobes, though the base of the leaves is generally entire, as in L. I'ro- 

 caccinu Ung., as well as in those of the living L. tuVqufera L. The char- 

 acter of nervation is the same in the variety as in the normal form, there 

 being merely two lateral nerves in each lobe instead of one. 



Habitat: Near Fort Harker, Ellsworth County, Kansas. Nos. 1 (lit and 

 10c of the nmseum of the University of Kansas; A. Wellington, collector. 



LiKIODENDEON WELLINGTONII, Sp. UOV. 



PI. XXVm, Fig. 3. 



Leaves coriaceous, of medium size, divided laterally into two long, 

 linear obtuse lobes ascending at an acute angle of divergence, the lower 

 nearly twice as long as the upper ones, curving inside; lateral nerves thin, 

 parallel. 



This fine leaf could scarcely be understood without a tigure. It is 

 l)roadly wedgefonu and rounded at base to a thin petiole ; the lower loV)es, 

 diverging at base at an angle of 40°J soon curve inward, ascending nearly 

 vertically from the middle to the somewhat enlarged, obtuse apex ; the 

 upper are shorter, at an angle of divergence of 40°. 



Though of a type closely related to that of L, acuminatnnu this leaf 

 can not be considered as a variety of that species, except by admitting that 

 all the forms described here are mere modifications of an original extremely 

 varialjle type whose leaves could all have been growing upon the same tree 

 and are therefore not sepai'alde into species. From the diversity of the 

 leaves described here this supposition is certainly not admissible. 



Habitat: Near Fort Harker, Ellsworth County, Kansas. Collector, 

 Mr. A. Wellington, to whom the species is dedicated. Nos. 11 aiid lib of 

 the musemn of the University of Kansas. 



