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ESSENTIALS OF BOTANY 



373. Form and Structure. — The general appearance of 

 many species of Lycopodium is very similar to that shown 

 in Fig. 213. Selaginella is most familiar to people who are 

 not botanists from the species often grown in greenhouses. 



Fig. 213. Plant of Lycopodium {L. annotinnm). 



It has somewhat the appearance of a large leafy moss-plant, 

 with the leaves arranged in four rows. 



The structure of the stems and leaves of the club- 

 mosses is somewhat complex. They have well-developed 

 fibro-vascular bundles with sieve-tubes. 



374. Reproduction; Heterospory. ^ — In Lycopodium the 

 leafy (asexual) plant prodtfces an immense number of 



