HYPNACEAE 



223 



67. RHYTIDIADELPHUS (Lindb.) 

 (Rhy-tid-i-a-del-phus) 



Warnst. 



A small genus, two species occurring in our range. 



■^ame derived from the Greek for ''wrinkled" and 



' brotherhood," possibly referring to this group having 



he leaves more wrinkled than other members of the 



ib-family. 



a. Plants very robust, rigid; common . . . . R. triquctrus. 



b. Plants slender, less rigid ; not common .... 



R. sguarrosus. 



a 



Plants shaggy, growing singly or together on the ground, 

 more rarely on earth-covered 

 rocks and decaying logs ; bright 

 or yellowish-green ; frequent 

 in moist woods; fruit occa- 

 sional. 



Stems very robust, stiff, erect 

 or ascending ; variable in length, 

 usually 2-4 inches long; irregu- 

 larly and unequally branched 

 or sometimes pinnate; stems 

 of young branches showing red 

 through leaves. 



Leaves straight, large, stiff, 

 wide-spreading; bright or yel- 

 lowish-green. 



Seta about i inch long; red- 

 dish-brown. 





Rhytidiadelphus Iriquctrus 



