MIOCENE FLORA— BAD LANDS. 223 



men of the Bad Lands has the scales of the stems evidently acute, while 

 Heer generally represents them obtuse. 



Hab. — Bad Lands, same as above. Professor Wm. Benton. Speci- 

 mens of stems with obtuse scales but no leaves, preserved in tufa, are in 

 the collection of Professor Winchell, from the Yellowstone Valley. 



SEQUOIA, Torr. 



Sequoia Laiigsd orfii, Brgt. 

 "U. S. Geol. Rep.," vii, p. 76. 



The specimens represent the variety with flat, more obtuse leaves, 

 described by Heer, " Fl. Alask.," p. 23, pi. i, fig. 10a, as var. obtusa. Another 

 form of this species, apparently corresponding to S. disticha, Heer, "Fl. 

 Arct.," iv, p. 63, pi. xii, fig. 2a; xiii, figs. 9, 10, is also represented in the 

 specimens of the Bad Lands — this in the collection of Professor McBride 

 from northwestern Dakota; the first is in that of Professor N. H. Winchell. 

 Heer separates S. disticha from the common S. Langsdorfii especially on 

 account of the opposite branchlets. The specimen of Professor McBride 

 has merely simple branchlets, therefore the reference is not certain. 



Tax odium distichum miocenum, Heer. 

 *'U. S. Geol. Rep.," p. 73, pi. vi, figs. 12-1-la. 



Hab. — Barr's Bluff, Yellowstone Valley. Professor N. H. Winchell. 



CORYLUS, Tourn. 



"U. S. Geol. Rep.," vii, p. 144. 



Corylus McQuarrii, Forbes. 



Plate XLIX, Fig. 4. 

 "U.S. Geol. Rep.," vii, p. 144. 



The teeth are less pronounced, larger and more equal than in most of 

 the figures given of this species. But the borders are somewhat erased and 

 the facies is that of some of the leaves described by Heer. It is a form 

 intermediate between C. McQuarrii and C. grandifolia, Newby., "Illust.." 

 pi. xv, fig. 5, which has the lateral nerves slender, less divided, and more 

 distant. 



Hab. — Bad Lands. Professor Wm. Denton. 



