MOSSES WITH A HAND-LENS 



HEDWIGIA 



is named for Hedwig, one of the best bryologists of the eighteenth 

 century. 





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mirm If 



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Mkr 



Fig. 14. Hedivigia albicans, a, x 1, wet and dry. b, Capsule with a 

 portion of the perichaetial leaves removed X 10. c, Branches, dry and wet, 

 X 5. d, Leaves X 10. 



It is common on boulders, ledges, stone walls, and dry 

 exposed places. The plants vary a great deal in size, but in gen- 

 eral have much longer stems and branches than their relatives, 

 besides being much the most common of all the family. 



The lower part of the plant is brown or black, the upper 

 green, with a tinge of gray due to the colorless tips of the 

 leaves. The capsules are entirely concealed in the longer 

 more slender perichaetial leaves, and the only indication of their 

 presence is a slight enlargement of the ends of some of the 



