XIV 



L YCOPODINE.-E 



481 



-dormant. These buds may produce others, but usually from 

 each one is produced one, or sometimes more, elongated shoots, 

 which develop into subterranean branches like those from 

 which the bud was originally produced. The young plant 



-sy-- 



Fig. 250. — Part of a vigorous plant of Psilotion triqiictrtiin (Sw.), about \. n, u, Subterranean 

 shoots ; a, a, the bases of aerial branches ; sy, synangia ; B, branch with two mature synangia, 

 slightly enlarged ; C, a single opened synangium, showing the two lobes of the sporophyll below 

 it (after Bertrand). 



arising from the gemma is at first composed of uniform 

 parenchyma, but in the later formed portions a simple vascular 

 bundle is finally developed. No definite apical cell can be 

 detected in the earlier stages, but later each branch of the 

 rhizome shows a pyramidal initial cell, much like that in the 



2 I 



