529 Rydberg : Studies on Rocky Mountain Flora 



broad, ovate : pedicels usually 3 together, very short, in fruit 1-4 

 mm. long: bractlets under the flowers 3, broadly triangular, con- 

 nate for about two thirds their length : flowers yellow : sepals 

 obovate, 4-5 mm. long : petals somewhat narrower and longer : 

 capsule ovoid, about 5 mm. long : beaks about i mm. long, spread- 

 ing : seeds appendaged. 



This has been confused with the eastern T. gbitinosa Pers. which 

 has an elongated raceme, longer pedicels, and oblong subequal 

 sepals and petals, about 4 mm. long. All specimens from the 

 west referred to T. ghitinosa may belong to T. intermedia. At 

 least all that I have seen do so. T. intermedia grows in bogs to 

 an altitude of 2,700 m. from Saskatchewan to Alaska, British 

 Columbia and Wyoming. The following specimens belong to it: 



Alaska: Sheh-Shooh Lake, 1895, M. IV. Gorman, /(^ (type) ; 

 Yes Bay, 1895, Thos. Hoivell, 1666 ; Khantaak Island, 1892, F. 

 Fnnston, ^j ; Sitka, Bongard. 



British Columbia: Summit of Selkirk Mountains, 1890, 

 Jolin Maconn. 



Washington : Totoish Mountains, 1897, 0. D. Allen 2yjf.i}) 



Montana: Flathead River, 1892, R. S. Williams, gij ; 

 Granite, 1892, Kelsey ; Upper Marias Pass, 1883, Canbj, J28. 



Wyoming: Cement Creek, 1897, i^. Tioeedy, jj6. 



ToFiELDiA occiDENTALis Wats. Proc. Am. Acad. 14: 283. 1879 

 This species is distinguished from the preceding by the nar- 

 rower, less connate bractlets, longer pedicels, narrower sepals, 

 larger capsule, 8 mm. long, and longer ascending beaks. The 

 following specimen from the Rocky Mountain region is in the 

 New York Herbaria. 



British Columbia : Avalanche Mountain, 1890, /. M. Maconn. 



XEROPHYLLUM 



This genus is represented by two species : 



Petals and sepals 7-10 mm. long. X. tenax. 



Petals and sepals 4-6 mm. long. X. Dottglasii. 



Xerophyllum tenax (Pursh) Nutt. Gen. Am. i : 235. 1818 

 Helonias tenax Pursh Fl. Am. Sept. 243. 18 14. 

 X. Douglasii Rydb, Mem. N. Y. Bot. Gard. i : 92 ; not Wats. 



