65 



subulate-lanceolate, or often dilated at the base, narrowly acuminate, entire, 

 niembranceous, fulvous-brown, veins very delicate forming copious minute 

 vertical areola?. Frond light green even when dried, ovate, ovate-deltoid, or 

 ovato-lanceolate, acuminate, tripinnatifid or subtripinnate but bipinnatifid 

 above, 35-55 cm. long, 20-33 cm. broad, flaccidly chartaceous, naked above, 

 but very thinly and minutely scaly beneath ; main rachis slender, thinly scaly, 

 stramineous ; pinnae laxly and alternately arranged, patulous or erect-patent, 

 about 5 on each side, the lowest one largest, and 8-12 cm. in width, deltoid- 

 lanceolete, but narrowly lanceolate in the superior ones, acuminate, petiolate, 

 the rachis slender, thinly scattered with acuminate linear-subulate small 

 scales ; pinnules often laxly arranged, alternate, patulous or erect-patent, 

 shortly pedicellate in the inferior ones, but sessile in the superior ones, ob- 

 long-lanceolate or ovate-lanceolate, shortly acuminate in the inferior ones, but 

 acute in the superior ones, obliquely cuneate at the base, the lower largest 

 ones attaining about 9 cm. long, the middle ones about 3 J cm. or less 

 long, deeply pinnatifid into oblong or ovate segments, the lower ones often 

 cut down to the rachis; segments very spin ulosely serrulate, but the inferior 

 ones margined with lobules, which are also spinulosely pauci-serrulate, obtuse 

 or acute with a spinulose tip at the apex, the largest one about 2J cm. 

 long, 11 mm. wide, the costa slightly arcuate outwards ; veins free, ascending, 

 the lower ones pinnate, the upper ones forked or simple. Sori more 

 or less loosely arranged, terminating the veinlet, 1-12 to a segment, placed 

 between the costa and margin ; indusium orbicular-reniform, membranaceous, 

 entire-margined ; sporangia long-pedicellate. 



Polystichum laserpitiifolium Diels in Engl, et Prantl Die Natiirl. 

 Pflanzenfam. I. 4, p. 193. 



Norn. Jap. Midori-kanaiuarabi. 



Hah. Prov. Tosa : Mt. Honokawa (Y. Yoshinagal Oct. 2, 1887). 



This fern is well distinguished by its retaining power of green colour 

 even when dried. Mettenius' original example has a too small frond, 

 when compared with ordinary ones growing spontaneously in forested place 

 on mountains of this country. 



Aspidium aristatum Sw. var. simplicior Makino var. nov. 



Stipe slender, longer or shorter than the frond, scaly throughout but 

 much densely so towards the base, stramineous ; scales ferruginous-brown or 

 fuscous-brown, linear, hairy-acuminate, intermixed with hairy ones. Frond 

 ovate, abrupt above and with a prolonged acuminate terminal pinna at the 



