DESCRIPTION OF SPECIES— JUGLANDE^. 289 



Jii;;l:ins denticiiluta, Heer 



Plate LVIII, rij,'. 1- 



Juglaus deniiculaia, Heer, Fl. Fo83. Arct., ii, p. 48:!, pi. Ivi, figH. 6-9.-Le«<ix., Annual Ueport, 1871, p. 

 298; Supplement, p. 8; Annual Keport, 1872, pp. 389, 408. 

 Leaves long, lanceolate, narrowed to a point, iiud denticulate upward; either rounded to ti.e 

 petiole, or gradually attenuated to it. 



The leaves of (his species vary so widely that none of the descriptions 

 made in the diflTereiit reports, and from si)ecimcns received at different times, 

 are alike. As in the figures given by Heer (loc. ci/.), some of our specimens 

 represent small leaves rounded to the petiole, wilh lateral veins generally 

 open; others have the base more or less narrowly cunca((> and the v(nns 

 more oblique. Fig. 1 ol' this plale represents 1h(! best specimen which T 

 have had for examination. It differs from most of the Greenland leaves by 

 liie lateral veins being more open, but not more so than in fig. fi of Heer. 

 A persistent character is the dentation of the borders toward the point of 

 the leailets; it is generally more or less discernible. The upper lateral veins 

 also are connected with the point of the teeth l)y distinct nervilles from 

 the back of the festoons, and the base of the leaflets is generally entire. 

 Prof Heer, comparing his species to Juglans bilinica, remarks, that the 

 . arches of the secondary veins run nearer to the borders, a character which 

 is seen upon all the fragments which 1 have referred to this species. 



Habitat. — Grreen River, Wyoming, above fish-beds; six miles above 

 Spring Canon, Montana {Dr. F. V. Hayden). Carbon, above the main coal; 

 not frecpient, and generally in fragments. 



CARYA, Nutt. 



C a r y a a ii t i q ii o r u iii , Newbj . 



Plate LVII, Figs. 1-5; Plate LVIII, Fig. 2. 



Carya antiquonm, Newby., Notes on the Later Extinct Floras of North America, p. 72.— Lcsqx., Annual 

 Keport, 1871, p. 294; 1872, p. 402. 



Leaflets large, broadly oval or ovate-lanceolate, acuminate, rounded or broadly cuneate to (be 

 petiole; base inecpiilateral; borders minutely denticulate; Lateral nerves close, paraUel, simple, curved 

 in ascending toward tlie borders. 



The leaflets of this species are very large, except those of the lowest 

 pair, whose size is, as in species ol' Juglans, generally diminutive; part of 

 fig. 3 and fig. 5 represent them. The largest, in the upper i)art of fig. 1, is 

 more than nine centimeters long below the middle, and its length could not 

 have been less than twenty centimeters. Fragmentary specimens in Dr. F. 

 19 T F 



