LYCOPODIACE.E. 



[ 481 ] LYCOPODIACE^. 



leaves are either scattered all along the 

 stem ; or collected into spikes resembling, on 



Fig. 425. 



Lycop odium complanatum. 

 One third the natural size. 



Fig. 428. 



a small scale, elongated Pine-cones (figs. 425, 

 435). The plants of the genus Lycopodiuin 

 proper, exhibit both these conditions ; but 



Fig. 426. 



Fig. 427. 



Selaginella cernua. Half natural size. 



Selaginella apoda. 



Fig. 426. Scale with oosporange. Magn. 20 diams. 

 Fig. 427. Scale with pollen-sporange. Magn. 20 diams. 



in all these the spores are small and nume- 

 rous and alike. In Selaginella, to which 

 belong the elegant creeping Club-mosses, 

 with flattened leafy stems (often with a 

 metallic lustre), now so much grown in 

 Wardian cases (fig. 428), the capsular leaves 

 are in spikes, which are found forming one 

 arm of a bifurcation of the stem, while the 

 other continues the vegetative growth ; and 

 in the spikes we find the capsules on the 

 lowest scales (oosporanges) producing only 

 four spores (macro - 

 spores, figs. 426, 429), 

 of much larger size 

 than those (micro- 

 spores) contained in 

 large number in the 

 other spore-cases (vol- 

 Ien-sporange8j figs. 

 427, 430). In Lyco- 

 podium and Selaginella 

 the sporanges have but 

 one cavity; in Tme- 

 sipteris the sporanges 

 are two-celled, and in 

 Psilotum three-celled. 

 In Isoetes (fig. 376, 

 p. 443), where all the 

 leaves are seated on a 

 tuberous stem, and 

 most of them fertile, 

 the sporanges contain- 

 ing spores of each kind 

 are many-celled, and 

 immersed in the sub- 

 stance of the bases of 

 the leaves. 



2i 



