FLORA OF THE STTASTA FOKMA'IIOX. 251 



gray sandstone in the creek hank. This sandstone is much Hke that 

 containinjj llie Po/iulus! Ricei (see p. '2()()), and il is prol)al)ly Uke 

 that of Horsetown ajje. 



The size of the ini(h'il) in the specimen in PI. LX^TI, llii. 1, sliows 

 that the leaf was probably full grown, and not a young one. Fig. 2 

 gives leaflets attached higher up on the midrib. Fig. 3 represents the 

 Oregon specimen. 



DiooxiTEs BtciiiAxrs rauinekvis Fontaiuc? 

 PI. bXVll, Fig. 4. 



1S9.3. Dioonilff! Buchiarnis riiriiKrvis Font. : Proc. U. S. Nat. Mas., Vol. XVI, ]>. 2(14, 



pi. xxxvi, figs. ;5, 4. 

 1894. Dioonites Burlihinus rarincrcls Font, in Dillcr iSi .Stantun: Bull. (icol. Soc. 



Am., Vol. V, ]). 4.')(). 



This is the terminal "port ion of a leaflet that in other respects, and 

 especial!}' in its remote, spare nerves, agrees well with the variety rarinervis 

 of Dioonites Bucluanns. The amount of material and the imperfect 

 preservation do not permit a positive identification with that variety. 

 It is, however, certainly D. Buchianus. This variety has been found 

 only in the Glen Rose flora of Texas. The specimen was found at locality 

 Xo. 11 and occurs on the .same fragment of rock with the immature cone 

 of Abietites described on page 262. 



Genus NILSONIA Brongniart. 



NiLSONiA Staxtoni Ward n. sp." 



Pi. LXVII, Figs. 5, 6. 



Leaf unknown. Leaf segments mostly equal. Occasionally some 

 are slightly wider than the average. The segments stand generally at 

 right angles with the midrib, but in some cases are directed slightly 

 foi*ward, so as to be somew^hat falcate. They are separate to the midril) 

 and of the same width from base to summit. On an average they are 

 1 cm. wide and 15 mm. long. Their tips are rounded, truncate, or else 

 elliptically narrowed. The nerves are not well disclosed, but are fine, 



"Tlic name friven to tliis speoip.s by Professor Fontaine in his manu.script was preoccupied. 1 therefore 

 name it for Dr. T. W. Stanton, wlio collected the specimens. — L. F. W. 



