;4c ^3 fj 'jj m f^j m (189) 



disappears till the time when it again forms. But the specimens collected in 

 spring and summer cannot be so well preserved for use as those collected in 

 autumn, which can be preserved for 'a long time and have a more agreeable 

 odor. The quantity gathered at the locality where Mr. Ogasawara resides 

 IS small, amounting in value only to about $ 140 to ^ i 50 in a year. 



Plate XXV. Fig. i, 2, whole plant (nat. size); 3-6, surface views of^ 

 different parts of tliallus; 3, margin (X420); 4, same (X560); 5, middle 

 portion ( x 420); 6, base ( x 240); 7, transverse section of thallus ( x 420). 



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ti mmuwmm - 6^ > m ^m^^mm ^ m -^wti n ^ ? m^^m 



His ->'*>' ?)ft> fSSfe ^=6 ^-Sl*SK^->'?'l:*:glSi' 



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