222 



POLYPODIACEJE. 



Pig. 151, Asplenium adiantum nigrum LINN; a, the plant; b, a scale; c, a pinnule ; cl, 

 a sorus of the Athyrium type. 



secus costulas pinnularum utroquo latere 1-seriatiin dispositi firme ap- 

 proximati lunulares vel iiiterdum sursum fii-me recurvi. 



Compared with an European specimen so labelled in the herbarium at 

 Tokyo. Perhaps ouo of the varieties of this species. 



