BRACHYTHECIACEAE 



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Brachythecium populeum (Hedw.) Bryol. Eur. re- 

 sembles B. salchrosum in general appearance, but is 

 often smaller and darker. It grows chiefly on rocks, 

 less frequently on roots or trunks of trees. The leaves 

 are a rather dark green. 



Range, Nova Scotia to Ontario, south to North Carolina; 

 British Columbia; Europe; Africa. 



Brachythecium plumosum (Sw.) Bryol. Eur. is found 

 chiefly on rocks in brooks, growing in thick, rather 

 dark-green mats, with shorter branches than the fol- 

 lowing species. See Hygrohypnum (p. 218) and 

 Bryhnia (p. 254). 



Range, Newfoundland to British Columbia, south in the 

 East to Alabama; Europe; Asia; Hawaiian Islands. 



Brachythecium rivulare Bryol. Eur. grows on rocks 

 in brooks and streams or on the 

 ground in very wet places that 

 are sometimes submerged. The 

 stems are creeping with very 

 long, erect secondary stems that 

 are often branched, and the 

 leaves are light green or yellow- 

 ish-green, somewhat glossy. See 

 Hygrohypnum (p. 218) Bryhnia 



(p. 254) and preceding species. Brachythecium rivulare 



Range, northern North America, south to North Carolina 

 and Missouri; Europe; Asia. 



