576 
A new species of Eucalyptus from the Dakota Group of South- 
western Kansas, 
By Lester F. WARD. 
In a small collection of fossil plants from the Dakota group 
of Clark County, Kansas, which was made by Mr. C. N. Gould and 
myself on October 3, 1897, there occur several leaves that belong 
to the genus Lucalyptus. One of these is entirely different from 
any of the rest and presents a nervation.which at once marks it as_ 
anew species. Although it is not generally advisable to name 
species from single specimens, especially from one incomplete leaf, 
nevertheless, so exceedingly clear is the nervation in the present 
case, that there is no room to doubt either its generic affinity or 
its specific distinctness from all other species of the genus. So much 
of the material that has been called Eucalyptus, which has been 
reported from various deposits throughout the world, is of a doubt- 
ful character that it is desirable that any case involving no uncer- 
tainty be brought to the attention of botanists and geologists. I 
regard this as such a case and therefore venture to describe it is-a 
new species of Eucalyptus, which I take pleasure in naming for 
Mr. C. N. Gould of Southwest Kansas College, Winfield, Kansas, 
who not only accompanied me on this expedition, but served as 
my companion and guide throughout the entire region, with which 
he has made himself intimately acquainted. 
EucaLyrtus GouLpII n, sp. 
Leaves slightly falcate, about 7 cm. long and 12 mm. wide 2 cm. 
above the base, from which point they diminish in both directions, 
being drawn out into a long point above (tip and base wanting in 
the only specimen found). Substance of the leaf firm and thick; on 
nervation very distinct, midrib strong, secondaries about 10 on @ 
side, rising at a very acute angle, proceeding in a zigzag course SO 
as to meet one another and anastomose, forming elongated angu- 
lar areas in two rows, the outer row smaller and bounded on the 
outer side by a connected series of gentle arches forming a con- 
tinuous nerve generally parallel to the margin and less than I mm. 
distant from it. 
_Ofallliving species of Excalypius this approaches most closely 
in its nervation to that of £. largiflorens, first described by Baron — 
