95 



Uhnus tenuinenis, Lesq. 



Bib : U. S. Geol. Snvv. Terr., 1873, 412 : Tert. Fl. VII, 188, pi. XXVI, f. 1-3 : Trans. R.S.C., 

 IV, 1886, iv. 28, pi. II, f. 11 : Cat. Cret. and Tert, PI,, 1898, 236. 



In 1886, Sir William Dawson described certain well preserved leaves of an elm under 

 the name of Ulmus prcecursor. They were obtained from the Lignite Tertiary of Porcupine 

 creek and were regarded as closely related to U. tenuinervis, I. esq. Knowlton has ascer- 

 tained that the two are really identical, in consequence of which Dawson's species is 

 abandoned. 



In the collections of Lambo from the Tranqnille river in 1906 this species is again 

 found, but it has not appeared in any collection other than those indicated. 



Vaccinophyllum quesium, Dn. 



Bib : Trans. R. S. C, VIII, 1890, iv, 88. 



The only locality at present known for this species is the Miocene of the Similkameen 

 river, from which it was obtained by Sir William Dawson in 1890. 



Viburnum asperum, Newb. 

 Bib: Geol. Surv. Can. 1887: VII, 1894, 36, 37 C : Lat. Ex. PL, 1868, 54. 



First recorded by ISTewberry from the Fort Union group of Cracker-box and Seven-mile 

 creeks, Montana, and the Bad Lands of Dakota, Viburnum asperum was later obtained by 

 Sir William Dawson from the Lignite Tertiary of Porcupine creek and from the Red Deer, 

 Finiay and Omineca rivers, but it has not been observed since 1894. 



Viburnum calgarianum, Dn. 

 Bib : Trans. R. S. C , III, 1885, iv, 18 ; IV, 1886, iv, 26. 



Sir William Dawson originally obtained this species from the Lignite Tertiary of Calgary, 

 Alberta, and in 1886 observed its occurrence in the same horizon at Porcupine creek. It 

 has not been found elsewhere, or since that date. 



Viburnum dentoni, Lesq 



Bib: Cret. and Tert. Fl., VIII, 231, pi. XLIX, f. 2-3. 



The original description of Ibis species by Lesquereux was based upon fragments of 

 leaves obtained from the Fort Union group of the Bad Lands, Dakota. Its first record since 

 that date is to be found in the present statement of its occurrence in the Tertiary beds of the 

 Tranquille river, as shown by the collections of Lambe in 1906. 



Viburnum lakesii, Lesq. 



Bib : Trans. R. S. C, I, 1882-83, iv, 32: U. S. Geol. Surv. Terr. 1873, 410 : Lesq. Tert. Flor. 

 1878, 226. 



The only Canadian account of this Viburnum is to be found in Sir William Dawson's 

 Cretaceous and Tertiary Flora for 1882, in which he makes a simple reference to its occur- 

 rence. Lesquereux has determined its presence in the Denver group of Golden, Colorado. 



