(359) 



Barbula fragilis (Drumm.) Bry. Eur. Tendertoot Cr., 

 Belt Mts. ; Birch Cr., Blackfeet Ind. Reserv. (216). 



Tortula subulata (L.) Hedw. Belt Mts., Great Falls; 



Columbia Falls, June; Two-medicine Lake (24). 



Tortula ruralis (L.) Ehrh. Common. Belt Mts., Great 

 Falls; Columbia Falls (iS). Small forms of this appear 

 much like intermedia. The borders are scarcely revolute, 

 the hair point shorter and smoother than in ordinary ruralis, 

 but the leaves are recurved and narrowed toward the apex as 

 in the latter. B. intermedia has the leaf just about as wide 

 near apex as at base with the apex truncate or emarginate. 

 Size of leaf-cells does not seem to afford any good character 

 for separating the two species. 



Scouleria aquatica Hook. Neihart, Belt Mts. ; Mac- 

 donald Lake, Aug. 6 (180). 



Grimmia confer ta Funck. Lower Sand Coulee (53). 



Grimmia conferta obtusifolia Bry. Eur. Columbia Falls, 

 Summit, G. N. Ry., 5,000 ft. (32). 



Grimmia ambigua (Sulliv.) Lesq. & James. These speci- 

 mens have a rough, hyaline point like afiocarfta but the 

 upper leaf is not bistratose as in that species, only one or two 

 rows of marginal cells being doubled above. The teeth are 

 solid or nearly so. May 16, Columbia Falls (273). 



Grimmia afocarfa (L.) Hedw. Neihart, Belt Mts., 

 Sept. (99). 



Grimmia apocarpa gracilis Web. & Mohr. Belt Mts., 

 July; Columbia Fulls, Sept. (138). 



Grimmia rivularis Brid. Abundant. Belt Mountains; 

 Summit, G. N. Ry., 5,000 ft. ; Columbia Falls, on old logs 

 near high water mark on Flathead River, Aug. and Sept. 

 (98). 



Grimmia anodon Bry. Eur. Neihart and Tenderfoot Cr., 

 Belt Mts- ; Columbia Falls, Sept. (132). 



Grimmia flagiofoda Hedw. Lower Falls of Missouri 

 River, May (n). 



Grimmia -pulvinata (L.) Smith. Lower Sand Coulee, 

 May 26 (245). 



