96 



species — perhaps even as a mere variety of the former-described ones. These 

 leaves are generally smaller, from 6 to 10 centimeters long, more enlarged 

 on the sides, from 8 to 12 centimeters broad, broadly triangular, obscurely 

 five-lobed or deeply undulately lobed, palmately five-nerved from the base of 

 the leaf, (not peltate,) with the lateral nerves much divided, their ultimate 

 divisions curving along the upper end of the veins and anastomosing in suc- 

 cessive bows, all the divisions dissolved or effaced before reaching the borders. 

 In the leaves referable to this species, the veins and the areolation, though 

 thin, are more distinct than in the former species ; the divisions of the pri- 

 mary nerves are from the base of the leaves ; the middle nerve is compara- 

 tively thicker; and the surface of the leaves is smooth. Fig. 4 has the general 

 aspect of a Populus of the coriaceous-leaved section, with somewhat different 

 borders, while Fig. 1 is, by its form, related to the leaf described as Ace?- 

 obtusilobum in Uuger's Chloris Prot, (p. 134, PI. xliii, Fig. 12.) 

 Habitat. — Salina River, same hill as the former. 



Menlspermites aceeifolia, Lesqx., PI. xx, Figs. 2-3. 



Leaves small, triangular or rhomboidal in outline, 3-5 obtusely lobato, wedge-form or abruptly nar- 

 rowed to the base. 



Acerites menispcrmifolia, Lesqx., American Journal of Science and Arts, loc. 

 cit, p. 101. 



These leaves are of a thinner substance than those of the former species, 

 small, 3 centimeters long and about as wide, 3-5 lobate, with lobes diverging 

 from near the middle of the leaves, all obtuse, the middle only slightly acu- 

 minate, 3-5 palmately nerved from the broad, nearly truncate, or more grad- 

 ually attenuated cuneiform base. In Fig. 2 the lateral primary nerves, only two, 

 are apparently without branches, and pass up to two lateral lobes. The leaf 

 (Fig. 3) is five-nerved and five-lobed, with the form somewhat like Fig. 1 of 

 the former species ; the first pair of lateral nerves is divided above the middle 

 in two branches, one passing outside toward the borders, the other ascending 

 and curving inside toward the base of the first secondary vein above. This 

 kind of nervation, and the form of the leaves, too, are so similar to those of the 

 leaves of Cocculus (Menispermwn) carolinus, D. C, that I can but consider 

 them as referable to this genus. The living plant has only a longer and more 

 pointed middle lobe of its leaves. The nervation, also, is the same as that 

 of the leaf described by Unger (loc. cit.) as Acer obtusilobum. 



Habitat. — Near Decatur, Nebraska, Hayden. 



