Holzingeri moss flora of the Minnesota river. 115 



13. Trichostomum tophaceum Brid. (?) Sterile. 



On a perpendicular wall of porous limestone dripping with 

 water, at Foster, on the Minnesota shore of Big Stone lake 

 (June 29). 



14. Ditrichum glaucescens (Hedw.) Hpe. 

 At Granite Falls (July 12). 



15. Barbula fallax Hedw. 



In Kandiyohi county (June 9-13). 

 At Granite Falls (June 14). 

 At Ortonville (June 22). 



16. Barbula mucronifolia (Brid.) Br. eur. 

 In Kandiyohi county (June 9-13). 



At Granite Falls (June 14). 



At Ortonville (June 24). 



At Foster, on the east shore of Big Stone lake (June 29). 



17. Barbula ruralis (L.) Hedw. 



At Cedar lake, near Montevideo (June 18). 

 At Ortonville (June 23). 



18. Barbula unguiculata (Huds.) Hedw. 



On the ground, in Kandiyohi county (June 9-13). 

 At Foster (June 29). 



19. Grimmia brandegei Aust. 



I am persuaded that this plant is specifically distinct from the 

 European G. -plagiofodia, and should not be referred to it as a 

 variety, as is done in Lesq. and James' Manual, p. 138. And 

 Austin's name has the right of way over the varietal name im- 

 posed by Lesquereux and James. This Minnesota plant com- 

 pares perfectly with one collected by Professor C. F. Baker, 

 near Durango, Colo., the region of the type locality of G. bran- 

 degei. 



Between Foster and Ortonville, on a calcareous rock along 

 the high banks of Big Stone lake (June 29). 



20. Grimmia apocarpa Hedw. 

 On rocks. 



At Ortonville (June 22). 



At Foster, a small form (June 29). 



At Montevideo, also a small form (July 7). 



