STRUCTURAL BOTANY 



part II 

 FLOWERLESS PLANTS 



CHAPTER I 



THE VASCULAR CRYPTOGAMS 



TYPE IV 



SELAGINELLA KRAUSSIANA 



Selaginella, from which our first type of Cryptogams 

 is taken, is a large genus, containing between three 

 and four hundred species, most of which inhabit the 

 damp forests of tropical countries. A few are natives 

 of Europe, and one, Selaginella spinosa, grows in our own 

 country, on boggy moors, or in mountainous districts. 

 Some of the tropical species are universally grown in 

 hothouses, and are often popularly called Lycopodium, 

 but the real Lycopodium, or Club Moss, is quite a differ- 

 ent, though an allied, genus. 



In general appearance the Selaginellas resemble large 

 Mosses, for they have long, usually creeping, stems, thickly 

 clothed with numerous small leaves. With the true 

 1 



