658 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. 



Phragmites falcata n. sp. 

 PI. LXXVIII, fig. 5. 



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

 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 which it is most closely related — that is, P. alaskana Heer. 



The fragment is 8 cm. in length and 11 mm. in width. It tapers for a 

 distance of 5 cm. to a long, sharp point, thereby differing from P. alaskana, 

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

 apart and reasonably distinct, The secondary or fine nerves can not be 

 made out, owing to the poor state of preservation. 



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

 Knowlton, July 27, 1888. 



Geonomites schimpeki Lx. 



Geonomites schimperi Lx.: Tert. Fl., p. 116, PI. X, fig. 1 (1878). 



Sabal major? TJng. Lesquereux: Fifth Aim. Rept. U. S. Geol. and Geog. Surv. Terr., 

 p. 295, 1S71 (1872). 



This species was collected with Anemia subcretacea, and the specimens 

 on which 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." 



Myrica bolanderi 1 Lx. 



PI. LXXVIII, fig. 4. 



Myrica bolanderi Lx. : Tert. Fl., p. 133, PI. XVII, fig. 17 (1878). 



Ilex undulata Lx. : ' Seventh Ann. Rept. IT. S. Geol. and Geog. Surv. Terr., 1873 (1S74), 

 p. 416. 



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 



1 When this was transferred to Myrica, the specific name undulata became preoccupied by M. 

 undulata (Heer) Schiinp., Pal. Veg., Vol. II, p. 546 (1870-1872). 



