GEOLOGICAL SURVEY OF THE TEREITORIES. 405 



The medial vein is marked to above the middle, the veins very thin, 

 close, straight, or nearly so, dichotomous in ascending. "From six miles 

 above Spring (JaCou." 



A very fine and well-characterized species, mentioned from specimens 

 in the collection of Dr. John Evans from Vancouver's Island. The 

 plants from this locality' were described and figured for a final report, 

 which was delivered to Dr. Evans, bat has never been published. A 

 short mention only is made of this species in the Journal, The pres- 

 ence of this leaf, easily identified, in strata evidently Eocene, with 

 species which, like Platanus aceroides^ Qnereus Fealci, Cimiamomum 

 liossniaessleri, t&c, cannot be considered as Cretaceous, confirm my 

 opinion on the Tertiary age of coal of Vancouver, loc. cit. 



CAULINITES SPARGAiSIIOIDES, Lsqx. 



Described above with specimens from Black Butte. 



POPULUS LEUCOPHYLLA, Uug. 



A small leaf, representing the variety figured by Gaudin, 1st Mem., 

 PI. iv. Fig. 3. 



" Near Fort Ellis, above coal." 



POPULUS MUTABILIS, VAR. REPANDO CRENATA, Hecr. 



A fine leaf, the upper half of whicli is, however, destroyed. The pre- 

 served part is G cent, long, G cent, wide in the middle, the petiole 5 

 cent. long. The second pair of lateral veins is nearer to the basilar ones 

 than in any of the leaves in Heer Flor. Tert. Helv., p. G2 ; but this dif- 

 ference is scarcely noticeable for leaves of so variable a species as this. 

 Though very common in the European Miocene, it has few representa- 

 tives in our Eocene flora. 



Salix angusta, (?) Al. Br. 



The specimen represents only the middle part of a linear leaf, 4 cent, 

 long, 12 mill, wide, with numerous secondary, deeply-marked veins, curv- 

 ing along the borders, and forming undulate margins by their depressions. 

 This fragment is of the same type as that published by Ludwig in Pal. 

 Wetter. Braunkohle, PI. xxxi. Fig. 2d, which, too, has the borders undu- 

 late by the depression of the veins. On account of the imperfect fnig- 

 ment, the identification is, however, uncertain. 



Alnus Kefersteinii, Gopp. 



In broken specimens. '* From six miles above Spring Canon." 



Quercus Wyomingiana, Lsqx. 



Like the former, in fragments. " From near Fort Ellis, above coal." 



Quercus Plata>'ia, Heer, var. Eotundifolia. 



Leaf round in outline, obtuse or obtusely short-pointed, deeply cor- 

 date at base, borders undulate. 



These leaves are three-nerved from the base, with two or three pairs 

 of upper secondary veins, parallel, mostly opposite, craspedodrouie, 



