244 description of species. 



CUPULIFERtE. 



aUERCUS, Linn. 



Quercus pseudo-aluus, Ett. 

 Plate LIII, Figs. 1-7. 

 Ett., -'Fl. V. Bilin," i, p. 59, pi. xvii, figs. 3-6. 



Leaves round-ovate or elliptical, short petiolate, subcoriaceous, irregularly 

 obtusely dentate; primary nerves strong; lateral nerves 6 to 8 pairs, slightly curved, 

 parallel, with few thin outside branches. 



The leaves are very variable in size and form, generally ovate, short, 

 obtusely acuminate, rounded to the petiole, sometimes abruptly decurrent 

 to it as in fig. 3, obtusely irregularly dentate. The author describes them 

 as irregularly spinose-dentate. All the leaves which I refer to this species 

 have the border teeth irregular, sometimes small, as in fig. 4, but none 

 acute. The species is closely related to Quercus Gaudini, Lesqx., "Am. 

 Journ. Sci. and Arts," vol. xxvii. No. 81, p. 360, of Bellingham Bay, from 

 which it essentially differs by the leaves being rounded at base, not or very 

 rarely narrowed to the petiole, and the more obtuse teeth of the borders. 



Hab. — John Day Valley, Oregon. 



Quercus furcinervis, Rossm. 

 Plate LIII, Fig. 8-14; LIV, Figs. 1, 2. 



Phyllites furcinervia and P. cuspidatus, Rossm., " Verst. v. Allsattel.," pi. vii and ix. 



Quercus furcinervis, Ung., "Foss. Fl. v. Swoszowice," pi. xiii, fig. 5; Heer, " Fl. Teit. Helv.," ii, p. 51, pi. Ixxvii, 

 figs. 17, 18; " Fl. Arct.," p. 107, pi. vii, figs. 6a, 7a; xly, fig. Id; xlvi, fig. 6; Ung., " Fl. v. Kumi.," 

 p. '27, pi. W, fig. 18; Ett., "Fl. v. Bil.," p. 38, pi. xvi, figs. 11, 12, &e. 



Leaves large, subcoriaceous, oblong or obovate-obloug, more or less abruptly 

 acuminate, gradually narrowed downward from the middle or from above it to a short 

 petiole, repaud-dentate from above the base; medial nerve strict; secondary nerves 

 parallel, slightly curved, craspedodrome, mostly simple. 



This species is still uncertain in some points. The above description 

 is that of Schimper, made from the figures of Rossmassler. It somewhat 

 differs from that of linger and of Heer, who describe the leaves as ovate- 

 lanceolate, acuminate. Schimper, therefore, supposes that Rossmassler's 

 leaves might perhaps represent Castanea atavia. His descriptions, however, 

 so positively agree with the characters of the leaves which I have figured, 

 and whicli certainly cannot be referable to Castanea, that evidently we have 



