120 MINNESOTA BOTANICAL STUDIES. 



At Cedar lake (June 18). 

 At Hartford (June 27). 

 At Foster (June 29). 



49. Bryum roseum (WEIS.) SCHREB. 

 In Kandiyohi county (June 9-13). 

 Near Ortonville (June 22). 



50. Mnium cuspidatum (L. ex p., SCHREB.) LEYSS. 

 At Granite Falls (June 13, 14). 



Near Ortonville (June 25). 



At Hartford (June 27). 



Near Browns Valley (June 28). 



51. Aulacomnium palustre (L.) SCHWAEGR. 

 At Granite Falls (June 13, 14). 



52. Timmia bavarica cucullata (Mx.). 

 On a shady wooded bank. 



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



53. Catharinsea macmillani sp. nov. (Plate XIX.) 



Dioica, floribus inventis femineis. Planta simplex, usque ad 

 2 centim. longa. Folia sicca involuta et circinata, madida 

 erecto-patentia, margine bistratoso e duabus seriebus cellularum 

 constructo dentibus geminis serrato ; lamina utraque facie valde 

 papillosa, inferiore etiam dentata ; lamellis 7-10 cellulas 8-12 

 aids, cellula terminali leviter papillosa. Castera ignota. 



This species is at once distinguished by its papillose leaves. 

 It is dedicated to Professor Conway MacMillan, director of the 

 Minnesota Botanical Survey. 



On the ground near Ortonville (June 25). 



NOTE. The original spelling of the generic name is Cathar- 

 mcea, not Catharinea. 



54. Polytrichum commune L. 



Near Ortonville (June 25), in the shade of a granitic outcrop. 



55. Polytrichum juniperinum WILLD. 

 At Granite Falls (June 14). 



Near Montevideo (June 17). 



56. Polytrichum piliferum SCHREB. 

 At Granite Falls (June 12). 

 Near Ortonville (June 23). 



57. Fontinalis obscura CARD. sp. nov. (Plate XXII. , 2.) 

 Planta sat mollis, obscuro- vel atro-viridis, inferne nigricans. 



Caulis 10-15 centim. longus, flexuosus, basi denudatus, irregu- 



