CULTIVATION. 83 



Atrichum undulatum (fig. 38) is a beautiful species, well 

 worthy of attention ; btit it will require, during the winter, 

 protection from frost or biting winds, and also plenty of 

 moisture. Few species show so soon the influence of change 

 of temperature. If a good supply of the beautiful fruit is 

 required, it will be essential that good tufts are taken with 

 a fair depth of soil, as the plant usually penetrates rather 

 deeply, and care should be taken that there is a good 

 sprinkling of the male flowers in the tuft. The soil used 

 for potting this should be of a stiff marly or clayey nature, 

 and little or no drainage will "be required. A plentiful 

 supply of water will be needed. 



This plant will be found in woods and in moist, shady 

 situations, more especially in heavy soils. 



Pogonatum urnigerum (fig. 39) and P. alpinum (fig. 31) 

 are both worthy of cultivation, and should have a good peaty 



FIG. 39. PogonatTim jirnigerum^ natural size. 



soil and plenty of root moisture. P. commune never seems to 

 flourish more than one season, but might possibly be made 

 to succeed if a good depth of soil were taken with it, and 

 the plant were grown in a seed pan with plenty of silver 

 sand mixed with the soil in which it was imbedded. This 

 will also want a good supply of root moisture. 



The extinguisher moss, Encalypta vulgaris, I have never 

 grown. As this is 'an annual, it will require to be re- 

 newed year by year. But Encalypta Streptocarpa (fig. n), 

 which will be found often in abundance on old mortar- 

 covered walls, will well repay cultivation. In this case I 

 find it best to remove a fairly good patch of the moss with 

 the mortar to which it is attached, and place it on the rock- 

 work just as removed ; and to keep it intact until I reached 

 home, I have found it advisable to wrap the whole mass, 

 in some strong paper, else the friable nature of the mortar 

 will cause it to crumble to pieces in the carriage. 



