43 

 Carpolithes seminulum, Heer. 



Bib : Trans. R.S.C., VII, 1889, iv, 69 : Flor. Fosa. Arct., I, 1868, 139. 



The original account of this very small, seed-like body was given by Heer in his study 

 of Tertiary plants from the Mackenzie river. It is oblong in form and measures 2x3,5 mm. 

 Dawson refers to the occurrence of this form in a later account of the Lignite Tertiary plants, 

 but without comment. 



Carya sp. 



Bib : Qeol. Surv. Can., 1875-76. 



A nut obtained from Quesnel river in 1875 was regarded by Sir William Dawson as 

 belonging to the genus Carya. 



Carya antiquorum, Newb. 



Bib: Trans. R.S.C., IV, 1886, iv, 19-34 ; VIII, 1902, iv, 46: Lat. Ex. Fl., XXXV, 85: 

 Oret. and Tert. FL, VIII, 236 : Tert. Fl., VII, 289. 



The history of this familiar Tertiary species shows that it was first observed in Canadian 

 limits in 1886, in the Lignite Tertiary of Porcupine creek. In 1897, collections by 

 Lambe from the Eed Deer river, at the mouth of the Blindman, were found to include it. 

 In 1902 it was recorded by Penhallow from the Horsefly river, and in 1904 it was once more 

 brought to notice in the collections of Ells and Johnston from Quilchena. 



The collections of Lambe in 1906 gave further evidence of its occurrence in the 

 Horsefly river and at Quilchena, and extended the area of distribution to the Tranquille 

 river. In these instances, as in most former collections, the leaves are represented by frag- 

 ments only, but the distinguishing features are usually so well defined as to leave little room 

 for question as to their identity. 



According to Newberry, this species is a constituent of the Eocene flora at the mouth of 

 the Yellowstone river, Montana, and Lesquereux records it from the Miocene of the Bad 

 Lands in the Yellowstone valley, as well as from Evanston, "Wyoming, where it is found 

 in abundance. 



The evidence of all observers seems to indicate that while this species is found in the 

 Lignite Tertiary, it is apparently more abundant in and more characteristic of the Miocene. 



Castanea sp. 

 Bib: Trans. E.S.C., IV, 1886, iv, 19-34: Geol. Surv. Can., 1879-80. 



A fragment of a leaf from the Lignite Tertiary of Porcupine creek was referred to 

 Castanea by Sir William Dawson in 1886, but it seems not improbable that it may more 

 properly belong to a species of Quercm not specifically described, but recorded by Sir William 

 Dawson in 1879. 



Castanea castanecefolia, (Ung.) Knowlton. 



Bib : Cat. Cret. and Tret. PI., 1898 : Oeol. Surv. Can., 1875-76: Trans. R.S.C., VIII, iv, 68, 

 1902 : Cret. and Tert. Fl., 1883, 246 : Foss. Fl. Alaska, Knowlton, 1904, 218. 



