400 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Ficus TiiUNCATA(?), sp. nov. 



Leaves oblong-ovate, truncate- cordate at base, obtusely-pointed, en- 

 tire, undulate, penninerve ; secondary veins nearly parallel, distant, on 

 an acute angle of divergence, the lower pairs only slightly more open and 

 opposite, camptodrome. The substance of the leaves is subcoriaceous; 

 they are short-petioled and some of them unequilateral ; the lowest pair 

 of secondary veins is from above the base of the leaves, and under them 

 there are still one or two pairs of shorter, thin, marginal veinlets curving 

 downward and following the borders. The species is, for the form of 

 the leaves, comparable to Quercus fagifolia, Gopp., of which we have 

 specimens from Golden. But the nervation and areolation are far differ- 

 ent, and similar to that of Ficus auriculata, Lesqx., to which, also, the 

 species is related by the general outline of the leaves. It may be a 

 variety of it. 



Habitat. — Golden. 



Platanus rhomboidea, sp. nov. 



Leaves coriaceous, rhomboidal in outline, largest in the middle, cuneate, 

 and entire from the middle to the base, slightly lobed with short, acute 

 lobes, broadly-lanceolate to the point and strongly dentate, the acute 

 teeth being nearly as long as the lobes and all equal; nervation plata- 

 noid ; areolation undistinct. This leaf might be considered as a young 

 leaf or a form of Platanus Haydenii, Newby. It difters, however, greatly 

 by its cuneate base, the sharp, broadly-lanceolate, long, equal teeth, and 

 the thick, coriaceous leaves. The base is destroyed. 



Habitat. — Golden ; communicated by A. Lakes. 



Artocarpidium olmedi^foliumC?), Ung. 



A single leaf, elliptical, acuminate, narrowed to the base, slightly 

 unequilateral, penninerve ; borders obtusely unequally dentate, entire 

 near the base, which appears slightly decurring upon the petiole; sec- 

 ondary veins thin, parallel, more oblique on one side than on the other. 

 Though this leaf is smaller than those figured by Uuger, (in Fl. t. 

 Sotzba, p. ;^6, PI. xiv. Figs. 1-2,) and by Heer, (in Fl. Tert. Helv., II, p. 

 70, PI, Ixxxiv, Fig. 8,) I have scarcely any doubt about its identity with 

 the European species. The surface of the leaf is crumpled ; its sub- 

 stance appears rather thin. Except the difference in size, there is no 

 character indicating any kind of difference, 



Habitat. — Golden, A. Lakes. 



PISONIA RACEMOSA, Sp. UOV. 



Leaves small, entire, thickish, rather membranaceous, obovate, round- 

 obtuse, gradually narrowed to a flexuous petiole, penninerve ; lateral 

 veins, four pairs, on an acute angle of divergence, parallel, curving quite 

 near the borders; areolation obsolete; fruits or unopened buds(?) in 

 branching corymbs or clusters of 6-8 pedicelled, either erect or horizon- 

 tal or pending acheniaC?), which are short, narrowly ovate, acute, with a 

 truncate base; pedicels filiform. This species is closely allied to P. 

 eocenioa, Ett., (Fl. v. Har., p. 43, PL xi. Figs. 1-22,) differing especially by 

 its much shorter achenia(°?) in more divided racemes. D'Ettinghausen 

 compares the fruitsC?) of his species to the unfolded buds or the ovaries of 

 some Pisonia. In the American specimens, these ovaries appear like 

 ripe small seeds, their tegument being a thin shell, and the inner sub- 

 stance, transformed into coal, appearing as a small nutlet split in two. 



