lesquekeux.] ENUMERATION OF CRETACEOUS PLANTS. 361 



Phyllites rhoifolius, Lesqx., Cret. Flor., p. Ill, PI. XXII, figs 



5 and 6. 

 Leaves coriaceous, lanceolate penninerve, irregularly obtusely dentate; 

 middle nerve thick; secondary veins parallel, camptodrome, deeply marked. 



Prunus? cretaceus, Lesqx., Cret. Flora, p. Ill, PI. XXIII, figs. 

 8 and 9 ;— PI. IV, fig. 9. 



Drupe ovate, obtusely pointed, grooved on one side to the middle, notched 

 at the enlarged obtuse base. 



Nothing new has been elicited in regard to the relation of this fruit, 

 though another specimen has been found apparently representing the 

 same species. As seen in fig. 9 of PI. IV, it is exactly of the same size 

 and form as the one in PI. XXIII, fig. 8, of the Cret. Flora. It is 

 upon the surface of a large flat fragment of sandstone, where it is im- 

 bedded to the middle of its thickness, the part figured being very dis- 

 tinct. From the remnants of a thin coat of matter similar to a shelly 

 envelope, it seems to have been surrounded by a coriaceous pericarp. 

 The same specimen represent a leaf of Aralia Towneri. 



Habitat. — South of Clay Center, Kansas, H. G. Toivner. . 



INCERT^E SEDIS. 



Aspidiophyllum, Lesqx. 



Leaves large, triangular in outline, palmately trilobed, truncate a,nd 

 auricled at base; nervation coarse, primary nerves three from above the 

 peltate top of the petiole ; secondary veins close, parallel, camptodrome or 

 craspedodrome. 



The essential difference separating the leaves of this new division 

 from those of Sassafras (Araliopsis) is the broadly peltate and auricled 

 base. As seen from Plate II, fig. 1, the lateral veins are very open, 

 nearly at a right angle with the middle one, and therefore the lobes 

 have the same direction, and the leaf has nearly the appearance of a 

 cross; these short broad lobes, either obtusely dentate by the extension 

 of the point of the secondary veins entering them, or entire whenever 

 these veins curve along them, are remarkably similar to those of S. 

 Marker ianum. The secondary nervation, however, is of a somewhat 

 different character, the veins beiug more curved in passing up to the 

 borders, and also at a more obtuse angle of divergence. The rounded, 

 more or less elongated auricle is nerved by the downward continuity of 

 the secondary veins, or, as seen in fig. 2, by two pairs of secondary 

 veins in right angle to the middle nerve, and two pairs of marginal 

 veinlets from the top of the petiole. This disposition has analogy to 

 the basilar nervation of Credneria leaves, with the difference, however, 

 that in Credneria all the lower secondary veins are at a right angle to 

 the midrib. The same kind of affinity is still more marked with species 

 of Protophyllum, as for example P. multinerve, Cret. Flor., PI. XVIII, 

 fig. 1, whose leaves, however, are not lobed, and whose upper nerva- 

 tion is of an entirely different type. We have therefore still in these 

 leaves a union of different characters separately and distinctly recog- 

 nized in other groups of this remarkable flora. 



Aspidiophyllum trilobatum, sp. nov. PI. II, figs. 1, 2. 



Leaves large, coriaceous, triangtdar or rhomboidal in outline, more or 

 less deeply trilobate, broadly cuneate to the base, enlarged into an half-round 

 auricle, three-nerved from above the peltate base of the thick middle nerve. 



These leaves vary in size from ten to twenty -four centimeters long and 



