FOSSIL FLORA. 745 



which is about one-fourth of it.s length t'roni the sinus, it is 2.5 cm. liroad. 

 The hiteral loUes are al)()ut 3.5 cm. hnig, not enhvrged upward. At Ijase 

 they are 1 cm. hroad, from which point they taper o-radually to a slender 

 acuminate ape.x. The nervation has been described in the diagnosis, and 

 niav also be clearU' made oiit from the excellent figure. 



It is hardh' possilile tn compare this s})ecies with descril)ed forms, from 

 the fact that it is so fragmentar\' tliat the perfect form can not l)e made 

 out. The characters of the larger middle lol)e ami the \er>' much smaller 

 lateral lobes seem to be so marked that it is strongly sejjarated from an}' 

 described species. Aral hi aiii/ustUohu lux.,' from the Chalk Blufts of Cali- 

 fornia, perhaps is closest to this species, yet it differs markedly. It will be 

 necessary to wait for additional material before its exact character can be 

 made out. 



I have named this species in honor of Mr. George M. Wright, one of 

 the collectors of this and man}- other valuable specimens in the Yellowstone 

 National Park. 



Habitat: Fossil Forest (No. 22c of section); collected by Wright and 

 Weed, September 2U, l.S,S5. 



Aralia notata Lx. 

 PI. C, tig-. 1. 



Aralin iwtata Lx.: Tert. FL, p. 237, PI. XXXIX, flgs. L'-4. Ward: Types of the 



Laramie Fl., p. CO, PL XXVII. fig. L 

 I'latunm diihia Lx. : Ilaydeii's Ann. Kept. 1873 (1S74), p. 4(10. 



The collections contain al)out 50 specimens that evidently belong to 

 this species. None of tliem are absolutely perfect, yet the general character 

 can be made out. They come from three localities, one of which, the 

 Yellowstone below Elk Creek, was given as a t}pe locality by Lesquereux.' 



There appears to have been a tendency among later writers to regard 

 this as the same as Newberry's Platanus nobilis^ from the Fort Union group, 

 which indeed it much resem]:»les. They were both very large species, not 

 often preserved entire, but they seem to differ essentially. On this point 

 Lesquereux says: "This species (^A. uotaia) seems very closely allied to 



' Mem. Mus. Comp. Zool., Vol. VI, No. 2, PI. V, tigs. 4, 5. 



-Tert. Fl., p. 237. 



'Later Extinct Flor:i. p. G7. 



