62 DESCRIPTION OF SPECIES. 



teeth short branches which enter them. There are not any intermediate 

 tertiary veins, but the nervilles are strong, often continuous, anastomosing 

 in the middle of the areas and forming by subdivisions a small quad- 

 rangular areolation (pi. viii, fig. 1). The typical relation of these Aralia 

 leaves is marked with Sassafras (AralwpsisJ cretaceum and S. mirdbile, 

 though the generic and specific characters are far different. 



Hal. — South of Fort Harker. Chs. Sternberg. A number of splendid 

 specimens have been found all at the same locality near Brookville, Kansas. 



Aralia quinquepartita, Lesqx. 

 "U. S. Geol. Rep.," vi, p. 90, pi. xv, fig. 6. 



Of this species, described, I. c, from two fragmentary specimens, I 

 have now seen some better leaves. One, the largest, is 16 centimeters 

 long from the top of the petiole to that of a lateral lobe preserved entire. 

 It is deeply divided into six narrow oblanceolate lobes, obscurely dentate 

 toward the apex, the lower lateral nearly entire. The medial lobe, 2 centi- 

 meters broad above the middle, is only 1 centimeter broad near the sinus. 

 Though somewhat thick, the leaves are rather membranaceous than cori- 

 aceous, the upper face smooth. The lateral veins are obsolete, appearing 

 very thinly distributed, about like those of A. Saportanea. The division 

 of this leaf in six is abnormal; the primary lateral nerves on one side 

 fork twice and therefore form three lobes, while on the other side the lat- 

 eral nerves fork once only and have thus two divisions only. 



Hob. — The best specimens seen of this form are from south of Fort 

 Harker. Chs. Sternberg. 



Aralia Towneri, Lesqx. 

 Plate VI, Fig. 4. 

 Hayden'e "Aun. Rep.," 1874, p. 349, pi. iv, fig. 1. 



Leaf large, coriaceous, polished on the upper face, irregularly flve-lobed to below 

 the middle; lobes entire, oblong, obtusely pointed; primary nerves in three, from near 

 the top of the petiole, the lateral ones forked at a distance from the base; secondary 

 veins open, variable in distance, very curved in passing toward the borders, campto- 

 drome, separated by short tertiary veins parallel to them or at right angles to the midrib. 



The leaves of this fine species are, as seen from another better pre- 

 served specimen, 15 centimeters long from the top of the petiole and 22 to 

 24 centimeters broad between the points of the lobes, which, descending 



