SS THE TRAILING LYCOPODIUMS. 



set closer on the branches and nearly appressed to them. 

 The zones marking the beginning of each season's growth 

 are also very clearly marked. It is in all ways a more 

 compact plant than the type, the differences, without 

 doubt, being due to the cold and exposure to which it is 

 subjected. 



The stiff club-moss is found from Washington to Col- 

 orado, Minnesota, Michigan, and New Jersey to Alaska 

 and Greenland, appearing to be very common in suitable 

 places in British America. It also occurs in the colder 

 parts of the Old World and in the Himalayas. It loves 

 the moist, shady woodlands, and is seldom plentiful in 

 the dry and exposed places in which Lycopodiiun clava- 

 titm thrives. 



'The Ground-Pine. 



Although several lycopodiums are more pine-like in 

 appearance, the name of ground-pine is most often 

 applied to the plant known to the botanist as Lycopodium 

 complanatuiii. It would require a lively imagination to 

 detect in this species any resemblance to the pine, for 

 the flat branches form little horizontal fans and semi- 

 circles quite unlike pine needles or branches. By what- 

 ever name called, however, it is a distinct and easily recog- 

 nized species, while its abundance, varied habitat, and 

 extended distribution make it well known to collectors. 



Like the common club-moss, the ground-pine has a 

 long running main stem or rootstock which may reach a 

 length of eight or ten feet. It creeps along close to the 

 earth, or an inch or two below the surface, and at inter- 

 vals sends down its single cord-like roots. The branches 

 are erect, those of the season being from two to five 



