Holzinger: MOSS FLORA OF THE MINNESOTA RIVER. 117 



which this plant is exposed the peristome is not developed, or 

 remains rudimentary (var. leptodon)" This exposure to ex- 

 tremes of climate is doubtless responsible for our Minnesota 

 form. 



At Granite Falls (June 14). 



29. Pyramidula tetragona (BRID) BRID. 



Very common in the shallow depressions on the granitic 

 "roches moutonnees," from Granite Falls to Big Stone lake. 

 All the plants collected were badly weathered, and in poor con- 

 dition. Husnot gives " spring" as the season for this species. 

 But if the plants found grew and matured in the spring of 1901, 

 it seems remarkable that they should become so badly weathered 

 by the middle of June. 



At Granite Falls (June 14). 



Near Montevideo (June 18). 



Near Ortonville (June 24). 



30. Physcomitrium hookeri HAMPE. 



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

 Near Montevideo (June 17). 

 At Foster (June 29). 



31. Physcomitrium turbinatum C. M. 



On the ground, at Granite Falls (June 13-14). 



Near Montevideo (June 17 ; July 8). 



At Cedar lake (June 18). 



On the shore of Lac qui Parle lake (June 20). 



Near Ortonville (July 4). 



32. Funaria americana LINDB. 



On the ground, always in rich, black, sandy soil, in shaded 

 situations, near Ortonville (June 23). 

 At Granite Falls (July 13). 

 See also the Bryologist, Jan., 1902, p. 7. 



33. Funaria hygrometrica (L.) SIBTH. 



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

 At Granite Falls (June 14). 

 Near Montevideo (June 20). 



At Simpson Park, on the Dakota side of Big Stone lake 

 (June 26). 



At Hartford, on the west shore of Big Stone lake (June 27). 



