Jan. 19.07.] 



HAYATA.—ENUM. PL. FOBMOSAXARUM. 



13 



scriptione oblongolineares pinnatae, pinnis remotiusculis hori- 

 zontale patentibus alternis oblongis plus minus attenuatis 

 petiolulatis subherbaceis S§ cm. longis 1cm. latis, supra nitidis 

 subtus pallidis, basi inaequalibus et oblique cuneatis pinnatihdis ; 

 lobis obovato-cuneatis obtusis apice inaequaliter inciso-serratis. 

 Sori lineares elongati, 6—9 in singula pinnula. 



Polypodium lineare Thunb. var. ? 



Hab. in monte Morrison, leg. G. Nakahaka, anno 1905. 



My Morrison specimen and Japanese 

 specimen agree quite well in general 

 aspect, but in the form of the scale and 

 abortive sporangium, they do not agree. 

 In the Japanese species, the abortive 

 sporangium is almost round, while in the 

 Morrison it is rhombic ; both being peltate 

 in the center. Moreover, the scale on 

 the rhizome is lanceolate in the Japanese 

 specimen, but in the Morrison specimen, 

 it is cordate at the base and cuspidate at 

 the apex. Further, the cells which con- 

 stitute the scale are quite different. In the 

 Japanese specimen, the cells of the scale 

 are very much thickened and colored from 

 the center up to the apex. But in my 

 specimen, it is only the apical portion 

 that the cells are colored and thickened. 

 Although the two bear much resemblance 

 in general aspect, they differ in the scale 

 and abortive sporangium which play so 

 an important part in systematizing this 

 family, that it is too valuable to be 

 thrown away. So far as the above men- 

 tioned points are concerned, the Morrison 



plant should be regarded as a variety of the Japanese species 



or even a different species. 



Scale and abortive 

 sporangium of the 

 Morrison Specimen. 



