Family LEUCOBRYACEAE 



A SMALL family occurring chiefly in the tropics with 

 the exception of the following genus which is almost 

 cosmopolitan. 



9. LEUCOBRYUM Hamp. (Leu-co-bry-um) 



A genus containing several species, mostly tropical. 

 The name is derived from two Greek words meaning 

 *' white moss," referring to the typical color of the 

 leaves. 



Leucobryum glaucum (L.) Schimp., sometimes 

 called '' white moss," is found on the ground and on 

 rocks in the woods. It is very com- 

 mon in most regions, but rarely 

 fruits. 



Plants growing in cushions of vary- 

 ing size; glaucous or whitish- green 

 above when dry; sometimes darker 

 green when moist; grayish-brown 

 beneath. 



Stems erect, usually 1-3 inches long, 

 thick, but easily broken; branched by 

 forking. 



Leaves long, narrow, tubular from 

 the incurved margins, erect or spreading; glaucous or whitish- 

 green, darker when moist in the early spring, but becoming 

 very pale w^hen dry. 



Leucobryum glaucum 

 Leaf enlarged. 



