b GEOLOGICAL SUEVEY OF THE TEEEITORIES. | 



Salix angusta, AL Br., in Heer's FI. Ter. Helv., 2, p. 30, PI. Ixix, ' 

 Fig. 3. One of the specimens represents a whole leaf 6 inches long 13 

 to 14 millimeters broad, in its widest part entire, linear, gradually taper- 

 ing to a long point, and tapering also by a slightly curved line to the 

 petiole. Thisleaf shows apparently its upper surface. The medial nerve 

 is broadly marked, but the secondary veins are obsolete like their divi- 

 sions. Another specimen of the same species has oidy one-half of a leaf 

 of about the same width as the former, the under part, with secondary 

 veins, very distinct, like their divisions, and surface evidently villose, it 

 being marked by the impression of a thick coat of hairs. Heer, in his 

 description of this species, rightlyc ompares it to S. viminalis, L., 

 remarking, however, that his specimens do not indicate if the leaves 

 were villose as in the living species. 



Salix media, A1. Br. For the form of the linear lanceolate leaves with 

 entire borders, tapering upward to a point, obtuse at base, our speci- 

 mens represent exactly this species as figured in FL Ter. Helv., PL Ixviii, 

 Figs. 14, 17, 19. But they do not show any trace of nervation, and iden- 

 tity is, therefore, uncertain. It is, however, generally the case in speci- 

 mens of this species whose u^jper surface is smooth and do not bear any 

 trace of secondary veins. 



Salix, species. Merely the base of two leaves still attached to a 

 branchlet, alternate, with unequal base, just as in B. mcequilaiera, 

 Gopp., Schossnitz FL, PL xxi. Fig. 6; very short-i)etioled, nearly sessile, 

 with entire or undulately crenulate borders ,• apparently narrowly lanceo- 

 late pointed; secondary, veins open, thick like the intermediate shorter 

 tertiary veins and nervilles ; areolation distinct, of the same type as that 

 of 8. Lavateri^ Heer. As much as can be seen, these leaves do not re- 

 semble any fossil species as yet published ; but as the form of the leaves 

 is not known, and as it is not seen if the borders are entire or denticu- 

 late, it is useless to attempt specification. 



Myeica nigricans, sp. nov. Fragments of leaves, apparently nar- 

 rowl^^ lanceolate or linear-lanceolate, half an inch wide or less, passing , 

 down in an outward curve and cuneate to the petiole, distantly serrate, 

 with short obtuse teeth ; medial nerve thick, secondary veins open, (angle 

 of divergence at least 60°,) distinct, branching doTrnward two or three 

 times in anastomosiug with intermediate short tei'tiary veinlets. The 

 nervation is analogous to that of the living M. gale, L,, while by the form 

 of the leaves it resembles M. Vindobonensis, IJng., as figured by Heer in 

 Alaska FL, PL iii, Fig. 5, differing, however, by the distant obtuse 

 teeth of the borders. All the specimens of these leaves are blackened 

 upon the yellow shale of this locality, and the surface appears dotted, 

 as in our common M. ceri/era, L., indicating a resinous compound in 

 Their texture. Some of the specimens bear small round seeds, which may ■ 

 be referred to this si^ecies. 



Myeica salicina, Ung. As far as identity can be ascertained from 

 the outline of the leaves and with, undistinct nervation, the leaf or part 

 of leaf of the specimen (the point and base being destroyed) is the same 

 as the one figured inFl. Ter. Helv., Pl.lxxi, Fig. 2. The thin secondary 

 veins, a few of which are discernible, have the same direction as in the ^ 

 European form and branch near the point as in sx)ecies of this genus, f 



QuEECUs LONCHiTis, Ung. A small specimen, a narrow, lanceolate 

 leaf, with serrate borders and secondary veins numerous, parallel, sim- 

 ple, craspedodrome, is referable to this species as figured in FL Ter. ' 

 Helv., PL cli. Figs. 22 and 23. 



Ficus POPULiNA, Heer. A number of specimens agree with the forms 

 of this species as described and ^gured in Heer, FI. Ter. Helv., from. 



