ii8 



Tall Bearded Ins 



more favorable buds sometimes then appear on various 

 portions of the rhizome, even on the growths of the 

 several previous years. Fig. XIII shows such a 

 rhizome. Its annual growth is indicated by rings 

 where the leaves withered aAvay. Notice that for 

 seven years it grew in length without developing a 

 side-bud, and then, conditions haA'ing been changed, 

 it produced buds on its growth of each previous A'car 

 and was preparing to — and did — flower the following 

 A'car. 



Fig. Xin. — RiiizoMK, ^vrAR\icD for yk.\rs, t\];i;r imfro\ed coximtioxs 



Each growing point is called a "toe". As the 

 joint increases in length the apex turns upwards to 

 produce leaves and flower-stem, and in time this 

 sometimes results in the upper part of the newer 

 rhizomes being brought to the surface of the ground; 

 and after a time, mainly b}' the action of the rain 

 and wind on the soil, the older rhizomes also some- 

 times become exposed. \A'hen this occurs it is not 

 necessary to re-cover the protruding rhizomes, for bv 



