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Fic. 450.--A. Lycopodium clavatum ; I. fertile branch or receptacle 
(natural size) ; II. small leaf or bract bearing a sporangium (greatly 
magnified) ; b. Selaginella tnequalifolia; I. fertile branch (natural 
size); II. microsporangium; III. macrosporangium (the two last _ 
greatly magnified), . : 2 riz2 set lies 
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