222 



POLYPODIACE33. 



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Pig. 151, Aspleniwn adiantum ni<jrmn LINN; a, the plant; b, a scale; o, a pinnule; d, 

 a sorus of the Atkyrium type. 



secus costiilas pinnularum utroquo latere 1-seriatim clispositi firme ap- 

 proximati hmulares vel interdum sursum firme recnn*i. 



Compared Avitli au European sp< (-iineu so labelled in the herbarium at 

 Tokyo. Perhaps one of the varieties of this species. 



