658 GEOLOGY OF THE YELLOWSTO^"E NATIONAL PARK. 



Phragmites falcata n. sp. 

 PL LXXVIII, fig. 5. 



Leaves narrowly lanceolate, with a long- acuminate apex; nerves rntlier 

 sparse, about ten in the width of the leaf; intermediate nerves obsolete. 



This species rests upon the fragment figured, and, scanty as the 

 material is, differs markedly from the species with which it is associated 

 and to wliich it is most closely related — that is, /'. aJ((s],-(i}i(i Heer. 



The fragment is 8 cm. in length and 11 mm. in \^•idth. It tapers for a 

 distance of 5 cm. to a long, sharp point, thereb}' differing from 7'. alaskaiui, 

 which is "obtuse or obtuseh' mucronate." The primary nerves are 1 mm. 

 apart and reasonably distinct. The secondar}' or fine nerves can not be 

 made out, owing to the ])Oor state of preservation. 



Habitat: Mount Everts, near summit of west end; collected by F. H. 

 Knowlton, July 27, ISSS. 



GeONOMITES SCHTxMPERI Lx. 



Ueonomites scMmptri Lx. : Tert. Fl., p. 110, PI. X, fig-. 1 (1878). 



Sahal major ^. Uug. Lesquereus : Fifth Ami. Kept. U. S. GeoL aud Geog. Surv. Terr., 

 p. 295, 1871 (1872). 



This species was collected with Aneiiila snbcrctacea, and the sjiecimens 

 on wliich it is based are preserved in the United States National Museum. 

 The species has not been since collected. 



Habitat: " Divide between the source of Snake River and the southern 

 shore of Yellowstone Lake." 



MVRICA BOLANDERI ! Lx. 



PI. LXXVIII, fig. 4. 



Myriea bolanderi Lx.: Tert. FL, p. 133, PL XVII, tig. 17 (1878). 



Ilex undulata Lx. : ' Seventh Aim. Kept. U. S. Cieol. and Geog. Surv. Terr., 1873 (1874), 

 p. 41C. 



I refer this single fragment with some hesitation to this species. It 

 differs slightly from the type specimen, which also appears to be the only 

 one thus far mentioned. The one under discussion is about the same size 



' When this was trnusferred to Myriea, the specific name iiiidiilata became preocciipipcl by M. 

 undulata (Heer) Schimp., PaL Veg., VoL II, p. 54G (1870-1872). 



