10 THE PALEONTOLOGY OF MINNESOTA. 



DESCRIPTION OF SPECIES OF CRETACEOUS FOSSIL PLANTS 



OF MINNESOTA. 



1. PINUS species. 



Leaf comparatively very long, narrow, linear, medial nerve broad; borders flat, irregu- 

 larly very thinly striate lengthwise. 



The fragment of a leaf 11 cm. long, 2J mm. broa.d, is as far as can be seen thatr of 

 a simple leaf of a Pinus, much like Finns hayesiana Heer, of the Tertiary of Green- 

 land. The medial nerve is obsolete in some parts of the leaves, very distinct in 

 others. 



Hob. North side of the Big Cottonwood river near New Ulrn. 

 Mus. Reg. No. 5160. 



2. SEQUOIA WINCHELLI, sp. nov. 



PLATE A, FIG. 1. 



First An. Rep. Minn. Sur., p. 114. Final Rep., Vol. I, p. 354. 



Branches slender; leaves linear-oblong, obtuse, gradually narrowed to a linear decurriny 

 base, disconnected from the branches, at least in the upper part; medial nerve thin, sometimes 

 obsolete; surface transversely rugulose under the thin epidermis. 



A beautiful species with slender pinnately divided branches ; leaves and 

 branchlets subdistichous and sub-opposite, half open ; leaves 8 mm. long or a little 

 less, 1| to 2 mm. broad at the middle, equally narrowed upward to an obtuse apex, 

 and downward to a narrow linear prolongation, decurring upon the branches, but 

 disconnected from them in the upper part or under the point of union to the 

 leaves. 



The only relative known to the species is Sequoia brevifolia Heer, abundantly 

 found near the base of the Laramie group formation at Point of Rocks, Wyoming, 

 and also in the Miocene of the Baltic in Germany. The leaves of the Cretaceous 

 species are narrower, their base more distinctly decurrent and detached from the 

 stems. 



Hob. Austin, Minnesota. 

 Mm. Reg. No. 115. 



POPULITES ELEGANS 



PLATE A, FIG. 2; PLATE, B, FIG. 1. 



V. 8. Geol. Report, F. V. Hayden, Vol. VI. drct. Fl. p. r,9, PL III, Fig. 3* 

 Leaves broadly oval, obtuse, or nearly round, narrowed at base by an abrupt curve to a 



*The quotations of this work are merely Indicated here below as Cret. Fl. 



