72 



Sassafras recurvatum, Lesqx., Hayden's Report, 1872, p. 424. 



This is a remarkable form, of which I have found very few specimens. 

 The more complete ones are figured here. Leaves subcoriaceous, nearly tla- 

 belliform or broadly wedge-form in outline, deeply divided in three or five (?) 

 nearly equal lobes, rounded downward, and narrowed by a deep inward curve 

 to the petiole ; borders entire or undulate ; primary veins in three, from above 

 the base, the lateral ones divided by one or two secondary branches as thick 

 as the primary nerves, which either curve inward and follow the borders, 

 branching and joining the secondary veins above, or curve outside toward 

 the point of one or two other lateral lobes of the leaf. The primary veins 

 are equally branched on both sides, but the branches vary in number and 

 distance, according to the divisions of the leaves, The specimen (Fig. 4) 

 is fragmentary, but the expansion of the limb of the leaf and its division in 

 one or perhaps two lower lobes, in accordance with the direction of the thick 

 branches of the primary nerves, is clearly seen on the left side of the leaf. In 

 comparing the leaf, Figs. 4, 5, of PI. x, with Fig. 4, of PI. viii, the generic 

 relation of the forms which they represent is easily seen ; but Fig. 3, of PI. 

 x, seems to be a deviation from the platanoid type, passing to that of Sassa- 

 fras, (Araliopsis,) and, therefore, may not represent the same species. The 

 polished surface of these membranaceous or subcoriaceous leaves and their 

 presence at the same locality induced me to consider them as identical, they 

 are related about in the same degree to Platanus or to Sassafras. 



Habitat. — Smoky Hill River, eight miles south of Fort Harker, Kansas. 



Platanus newberryana, Heer, PI. viii, Figs. 2-3 ; PI. ix, Fig. 3. 



Loaves of medium size, thickish, palmately three-lobed, either tapering to a point from the lateral 

 lobes upward or without lobes, and ovate taper-pointed, broadly cuneate to the base, equally dentate; 

 secondary veins close, numerous. 



Platanus(X) newberryana, Heer, Phyl. du Nebr., p. 16, PI. 1, Fig. 4. — Platanus 

 newberrii, Lesqx., American Journal of Science and Arts, (2), xlvi, 1868, 

 p. 97. 



The description of Heer was made from an imperfect specimen, better, 

 however, than the one copied in PI. ix, Fig. 2, for it shows under the lateral 

 lobes the peculiar kind of dentation which marks the borders to the point. 

 Two better specimens have been obtained since ; one (PI. viii, Fig. 3) repre- 

 sents a palmately three-lobed leaf 12 centimeters long without the petiole, 

 10 centimeters wide between the top of the lobes, which are short-pointed, 



