TEXTBOOK OF BOTANY 



of the branch so as to form a structure much like a pine 

 cone. 



137. Club-mosses. These are small, mostly creeping 

 plants, looking more like mosses than ferns. The moss-like 

 plants, however, belong to the asexual generation, so that the 



FIG. 61. A club-moss (Lycopo- 

 dium) that bears but one kind of 

 spores, i, a portion of the plant 

 showing the branching stem, leaves, 

 and roots, the spore-bearing leaves 

 being arranged in cone-like struc- 

 tures at the ends of upright branches. 

 2, a spore-bearing leaf, with a spore 

 sac at its base, j and 4, spores. 

 After Wossidlo. 



FIG. 62. A club-moss 

 (Selaginella) that bears spores 

 of two different sizes ; a, special 

 branches which bear roots at 

 their ends; b, foliage leaves; 

 c, spore-bearing leaves. 



likeness to mosses is only apparent. Some of the club-mosses 

 (Fig. 61) bear one kind of spore, like the true ferns ; others 

 (Fig. 62) have two kinds of spores, like the water ferns, and 

 their sexual generation consists of male and female plants 

 that are very different in size. The spore sacs are borne 

 singly either on ordinary leaves, or on special leaves which 



