﻿538 Underwood : The ternate Species of Botrychium 



as shown by specimens in the collections of T. C. Porter; we 

 take pleasure in naming it for its original collector. Specimens 

 are in the U. S. National Herbarium collected by J. M. Coulter at 

 Teton Lake (Hayden's Expedition), Yellowstone Park, Tweedy, 

 1885, and small young specimens in grassy meadows near Mos- 

 cow, Idaho, L. F. Henderson. Specimens are in the Gray her- 

 barium from Shoshone Basin, August 23-26, 7,800 ft. marked, 

 " Grows in all the Geyser Basins, C. R." 



Dr. Rydberg who has seen this species in life in abundance 

 says that it diners in habit from the eastern B. obliqmim as widely 

 as that species differs from B. Virginiamim ; it is very distinct from 

 any of our other species. 



14. Botrychium occidentale sp. nov. 



A tall fleshy plant of open woods. Roots fibrous, fleshy ; 

 stem short, 2-5 cm. long, 5 mm. or more in diameter ; petiole of 

 the sterile lamina 11-12 cm. long, rather slender; lamina very 

 large, 18-20 cm. broad, 13-14 cm. high, the lateral divisions bi- 

 pmnate with about 5 pairs of mostly opposite pinnae ; the termi- 

 nal division tnpinnatifid, gradually simpler above ; ultimate seg- 



r , , . . * •*: ' ; ■ v«**^* :> nun. wiuei, rne margins 



finely but irregularly crenulate ; texture fleshy, the veins indistinct ; 

 sporophylls 4 dm. long (including the panicle which ranges from 

 10-15 cm.), tripinnate almost throughout its entire length; bud 



dpriQP V hairv with uiK«+a o,l 1,», i,~- _ o y 



1897. A fine series collected by Mr. A. J 



July 



barium. 



J 



Academy 



(B 



n, d f T Si and ■"? T eXCe " ent S P edmens ""ected b ; 

 tude^o' N _9 ' °" eg ° n B ° Undar >- Commission, iJ- 



'5. 



Japonicum (Prantl) 



ds 3 cm.), often clothed with the 



