LYCOPODIACE^:. 



[ 482 ] 



LYCOPODfACEJS. 



Fig. 429. 



Fig. 430. 



Selaginella cernua. Half natural size. 



Fig. 429. Oosporange with four large spores. Magn. 



20 diams. 

 Fig. 430. Pollen-sporange burst, containing small 



spores. Magn. 20 diams. 



Fig. 431. 



The anatomical structure of the stem of 

 the Lycopodiese is not very complex. There 

 is an outer thickish rind, composed of cel- 

 lular tissue; and on cutting across a stem, 

 the ends of isolated fibro-vascular bundles 

 are sometimes seen traversing this ; these 

 isolated bundles are merely a portion of 

 those forming a kind of cord running up 

 the centre of the stem, whence they have 

 been seen sent off to supply the leaves. 

 The fibro-vascular bundles are composed of 

 spiral-fibrous ducts surrounded by elongated 



Fig. 432. 



Fig. 433. 



Lycopodium phlogmarium. 



Fig. 431. Section of the stem. Magnified 20 diameters. 

 Fig. 432. The centre of ditto. Magnified 100 diameters. 

 Fig. 433. One of the isolated bundles of ditto. Magnified 200 diameters. 



Fig. 434:. 



Fig. 435. 



r. 436. 



Fig. 434. Lycopodium complanatum. Young shoot. 



Fig. 435. Lycopodium lucidulum. Spike of fruit. Magnified 3 diameters. 



Fig. 436 Selaginella apoda. Young shoot. Magnified 2 diams. 



