Holzinger : MOSS FLORA OF THE MINNESOTA RIVER. 123 



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75. Brachythecium cyrtophyllum KINDB. 



At the base of trees, in Kandiyohi county (June 9-13). 

 At Montevideo (June 21). 

 Near Ortonville (June 22). 

 At Simpson park (June 26). 

 At Foster (June 29). 



76. Brachythecium oxycladon (Bum.) JAEG. & SAUERB. 

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



At Montevideo (June 21). 

 At Hartford (June 27). 

 At Foster (June 27). 



77. Eurhynchium strigosum fallax R. & C. (" Not typical." 



Grout.) 

 On the ground, near Montevideo (June 16). 



78. Plagiothecium sullivantiae Sen. 



On granitic ledges, shaded, and kept moist by trickling 

 water, at Cedar lake, near Montevideo (June 18). 



79. Amblystegium adnatum (HEDW.) AUST. (Determined by 



Cardot & Theriot.) 

 Over rocks and on the ground, at Granite Falls (July 12). 



80. Amblystegium brachyphyllum Card. & Ther. sp. nov. 



(Plate XX., 3.) 



A. rifario affine, a quo differt foliis brevioribus, ovato-lan- 

 ceolatis, 1.6-1.7 millim. longis, .7 latis, breviter acuminatis, 

 apice obtuso vel subobtuso. Costa valida, basi dilatata, 50-80 // 

 lata, usque ad 2 /^ vel ^ folii producta. Cellulae mediae lineares, 

 70-90 p. longas, 9 p. latae. Fructus ignotus. 



By the blunt or subobtuse acumen this moss resembles A. 

 vacillans Sulliv., but it has much shorter and broader leaves. 

 From A. brevipes Card. & Ther. it is well distinguished by the 

 larger size, the blunt acumen, the longer and narrower cells, 

 and the stronger costa. 



The polymorphous A. riparium constitutes a vast group of 

 forms, some of which are constant enough and are sufficiently 

 characterized to be considered as secondary or tertiary species ; 

 such are: A. kochii Br. eur., A. vacillans Sulliv., A. brachy- 

 phyllum and A. brevipes Card. & Ther., A. floridanum Ren. 

 & Card., and probably A. argillicola Lindb. 



Habitat: Granite Falls (July 15). 



