254 



POLYPODIACR2E. 



The venation of our fern is more finely reticulated than that figured in HOOK'S 

 work, but more loosely reticulated than that figured in BEDDOME'S. 



Polypodium tenuissimum HAYATA sp. nov. (Fig. 178). Rhizoma 

 breve tenue erectum apice dense squamatum apice stipites caespitosum 

 gereus, squamis tenuissimis fuscis oblougo-lanceolatis usque 14- mm. lougis 

 | mm. latis apice obtusis bisetosis basi rotundatis vel leviter cordatis. 

 Stipes brevissimus 1-2 cm. longus ad apicem rhizomatis c?espitosus ad basin 



Fig. 178, Polypodium tenuissimum HAYATA; a, the plant; b, a scale on the rhizome; 

 c, another smaller one; d, a portion of the frond. 



