130 UNITED STATESGEOLOGICALSDRVEY— TERTIARY FLORA. 



connection. The secondary veins are united by cross-nervilles in right 

 angle, forming large quadrate areolae ; the ultimate nervation being obso- 

 lete. The borders, irregularly and obtusely dentate from a little above the 

 petiole, become entire from the base of the long acumen up to its point. 

 In the numerous specimens obtained of this species, and those examined in 

 situ, I have seen the acumen of the leaves preserved, *and measuring one to 

 three centimeters, linear, entire, gradually sharply pointed. The divergence 

 of the secondary veins is about 60°. By the form of the leaves and the 

 slightly obtuse teeth of the borders, this species is like Banksia Ungeri, Ett., 

 described in Har., Fl.. p. 54, pi. xvii and xviii, as Myrica hanksiafolia, Ung. 

 Its nervation,however, relates it very intimately to Lomatia latior, Heer, Bait. 

 Fl. p. 80, pi. xxiv, fig. 16. The fragment figured by Heer is regretably too 

 small for a close comparison. It seems, however, remarkably like our fig. 9, 

 base of fig. 8, both by the nervation and the denticulation of the borders. 

 Species of the same type are described from Sotzka and Mount Balca, or from 

 the Eocene. I cannot consider these leaves as referable to a species of 

 Lomatia, for the reason that the shaly sandstone where they abound have also 

 numerous scattered seeds and scales like those of Myrica. They are figured 

 in pi. Ix, fig. 8, and described hereafter as Carpolithes myricarum. 



Habhat. — Black Buttes, Wyoming Territory, in soft sandstone above 

 main coal; also in the burned red shale top of the hills. 



myrica acuminata, Uug. 

 Plate XVII, Figs. 1-4. 



Myrica acuminata, Ung., Flor. of Sotzka, p. 30, pi. vi, figs. 5-10 ; pi. vii, fig. 9.— Heer, Fl. Foss. Arct., i, p. 



102, pi. iv, figs. 14-16; pi. vii, fig. 6 i ; Mioc. Bait. Fl., p. 33, pi. vii, fig. 1; Fl. v. Bornst., 



p. 13, pi. ii, fig. 1. — Lesqx., Annual Report, 1873, p. 411. 

 Dryandroides acuminata, Ett., Proteac. d. Vorw., p. 32.— Heer, Fl. Tert. Helv.. ii, p. 103, pi. xcix, figs. 17-21 ; 



pi. c, figs. 1-2. 



Leaves coriaceous, shining, linear-lanceolate, acaminate, irregularly dentate ; nervation obsolete. 



Variable in size, from four to eight centimeters long, and comparatively 

 narrow, these leaves are linear-lanceolate, gradually tapering upward and 

 acuminate, more rapidly narrowed to a short petiole, irregularly sharply 

 dentate on the borders. Their consistence is coriaceous, the surface shining, 

 and the nervation obsolete, at least toward the borders, where the veins 

 seem directed to the teeth, but not entering them, linger says of the leaves 

 of his species: serraturis equalibus, minimis, approximatis, a character which 

 does not seem £o be in accordance with what is represented in figs. 1 and 



