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NA T URE-S TUDY RE VIE W 



[11:7— Oct., 1915 



Hypnum imponens Hedw. (The Pinnate Hypnum) is a very- 

 attractive moss, nearly always found covering rotting logs or wood 

 with its bright green mats. It is found in moist shady places 

 nearly everywhere in eastern Canada and the northeastern 



Hypnum impaneus x 2 (?) 



United States. It is abundant on Long Island within the limits 

 of New York City. 



The Pinnate Hypnum may be identified by its nearly regular 

 pinnate branching, reddish stems, leaves curved to one side 

 (secund), usually curved downwards and more or less hooklike at 

 the ends of the stems and branches, and also lacking a midrib; and 

 by the nearly erect capsules, cylindrical but slightly curved. There 

 are several other species of Hypnum that are closely related to 

 H. imponens and much resemble it, but a moss which grows on 



