18 



acuminate, bipinnatiparted or subbipinnate, 16-34 cm. long, 5-17 cm. wide, 

 firmely herbaceous, glabrous ; rachis slender, sometimes fibrilloso-squamose 

 below; pinme 12-18 on each side, patent or sometimes erect-patent, often 

 more or less reflexed in the inferior ones, subsessile, alternate or sometimes 

 subopposite, lanceolate or angustato-lanceolate, often falcate, acuminate, 

 truncate at the base, deeply pinnatiparted, or subpinnate, usually a little 

 apart or approximate, largest in the middle ones ; pinnules numerous, 

 patent, approximate or sub ipproximate, ovato-lanceolate, or oblong-lanceo- 

 late, acute or shortly acuminate, sharp-serrate or crenato-serrate, usually 

 auriculate at the upper base, the upper basal pinnula larger ; venation 

 conspicuous ; veins flexuous, pinnate ; venules erect-patent, loose, simple or 

 the lower ones furcate or pauci-pinnate. Sori small, 1-many to each 

 pinnula, often confluent when fully matured, elevated, dorsal on the upper 

 portion of venules, oblong but the lower ones reniform or obliquely 

 hippocrepiform ; indusium very thinly membranaceous, entire-margined. 

 Sporangia obovato-oval, the pedicel equal to or shorter than the case ; 

 spore elliptical, alato-rugose. 



Hah. Japan, widely distributed, found growing on mountains and 

 wooded hills. 



This is alHed to Athyrium Filix-fodmina Roth, but is evidently distinct 

 from it. 



Fimbristylis (Trichelostylis) tonensis Makino in Bot. Mag., Tokyo, 

 IX. (1895) p. 260. 



Annual, glabrous, densely ceespitose, 12-25 cm. high. Eoots fibrous, 

 fusco-castaneous. Stems slender, glabrous, much compressed, with smooth 

 edges. Leaves basal, few to each stem, angustato-linear, acuminate, 

 sheathing at the base, shorter than the stem, 3-18 cm. long, 1-21 mm. 

 broad, 1 or 3-nerved, with closed venules, the margin thickish and smooth 

 excepting the upper which is very finely scabrous. Cyme compound- 

 umbellate, 11-6 cm. across, with many spiculas ; radii and pedicels unequal 

 in length ; the interior spicula of the umbel sessile. Involucral bracts few, 

 unequal in length, angustato-linear, acuminate, finely scabro-spinulose ou 

 the margin, the outermost one largest and slightly longer or shorter than 

 the cyme ; bracteoles short, subulato-linear, aristato-acuminate, scarious on 

 both sides of the midrib. Spiculae oblong, or oblong-subcylindrical, comosely 

 covered with numerous patent ferruginous style-branches, 4-6 mm. long. 



