DESCRIPTIONS OF SPECIES. 27 



branches of Thuja which resembles closely iu structure the cone of T. 

 occidental-is. 



Formation and locality: Tertiary (Fort Union group). Fort Union, 

 Dakota. 



ANGIOSPERJOE. 



MONOCOTYLEDONE^E. 



Order GRAMINE/E. 



Phragmites sp."? Newb. 



PL XXII, figs. 5, 5a. 



Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 38; Ills. Cret. and Tert. PI. 

 (1878), PI. VII, figs. 5, 5a. 



"Among the plants collected by Dr. Hayden from the Miocene beds 

 near Fort Union are numerous fragments of what seems to be a species of 

 Phragmites. These consist of portions of broad, unkeeled, flaglike leaves, 

 marked by numerous longitudinal nerves, of which there are eight or nine 

 more strongly marked, and between these about seven much finer, con- 

 nected by alternate cross bars. No keel is shown in any of these fragments. 

 In general structure these leaves closely resemble those of P. Oeningensis 

 Heer (Fl. Tert. Helv., Vol. I, p. 64, PI. XXIV); but the material is not 

 sufficient to determine whether our species is identical with that. 



" Formation and locality: Fort Union, Dakota (Dr. Hayden)." 



Order PALMiE. 

 Sabal Campbelli Newb. 

 PI. XXI, figs. 1, 2. 

 Boston Joum. Nat. Hist., Vol. VII (1S63), p. 515. 



"Leaf large, 8 feet in diameter, with fifty to seventy folds; petiole long, 

 16 lines or more in Avidth, flat above, without a central keel and unarmed; 

 nerves numerous and fine, about fifty in each fold — six principal nerves on 

 each side of the midrib, with three intermediate nerves between each pair, 

 the middle one being strongest," 



In its general character this palm bears a strong resemblance to Sabal 

 major, Ung. sp. (Chlor Prot, p. 42, PI. XIV, fig. 2; Fl. Tert. Helv., Vol. I, 



