176 MOSSES WITH A HAND-LENS 



be difficult of observation. The perichaetial leaves are also cleft 

 like the others, but are much larger and proportionately longer. 

 The perianth is dentate. At first sight this species might be 

 mistaken for a Cephalozia, but a close examination of the leaves 

 will at once show the difference. Dr. Alexander Evans says r 

 " A peculiar habit of the plant is the way in which its prostrate 

 stems creep over tufts of mosses and other hepatics, the tufts thus 

 encroached upon are in time completely covered by the Lepidozia, 

 and, as their supply of light is cut off, they become feeble and 

 finally perish. It is among these crowded patches, and particu- 

 larly those which grow on rotten logs, that we must look for 

 fruiting specimens, the plants on shaded rocks being almost in- 

 variably feebly developed and sterile." 



L,. SYLVATICA Evans (Z,. setacea of Gray's Manual) is com- 

 mon but might be mistaken for Blepharostoma, but it grows in 

 dense tufts and the divisions of the leaves are shorter and are 

 two or three cells wide instead of one as in Blepharostoma. 



CEPHALOZIA. 



According to Dr. Evans we have eleven species of Cephalozia 

 in New England. The Cephalozias, 

 however, are so tiny that it is difficult 

 to recognize the species with a lens, al- 

 though the genus can readily be made 

 out by reason of the small size and 

 peculiar rounded two-lobed leaves which 

 in some species remind one of tiny 

 lobster claws. One or more of these 

 beautiful tiny plants can be collected on 

 Figure 106. Branch of ^very trip if one takes the trouble to 

 Cephalozia bicuspidata X 2 look for them. They grow on bare 

 at the left. At the right C. soil, decayed wood, over other mosses 

 m«Zi«.™ eonsiderably mag- ^^^ hepatics, almost everywhere that 

 other hepatics will grow. 



BAZZANIA. 



B. TRiLOBATA (L.) S. F. Gray, the Three-toothed Bazzania, is 

 one of the largest of the scale mosses. It is common on the 



