198 



POLYPODIACE^E. 



ascendens. Stipes 20 cm. longus frondem sequans basi densissime squamatus 

 superiore minus dense squamatus, squamis castaneis dimorphis, squamis 

 basis stipitum linearibus vel filiformi-linearibus circ. 12 mm. longis acuminatis 

 ^-1 mm. latis, squamis in medio stipitum latioribus lanceolatis ovatis 12-15 mm. 

 longis 2-3-4 mm. latis apice cuspidatis (cuspidibus 



Fig. 184, Potystichum prlonolepis HAYATA ; a, the plait ; b, a scale on the stipe ; c, the 

 margin of the vanae ; d, a scale on the rhachis ; e, margin of the same ; f, a scale on the lower 

 surface of a pinna ; g, a pinna. 





