9i Vol. XLIII, Alt. 1.— K. Yeudo: 



margin entire, splitting in the older parts of the blade obliquely 

 or almost transversely to the midrib ; base of tlie blade acate 

 with tapered end ; tip of the blade narrowed above, pinnately 

 cleft and generally roughly worn away. Stipe short, 5-10 cm. 

 in length, subcylindrical below, 3-4 mm. in diameter, compressed 

 and broadened upwards into a linear-cuneate form with the maxi- 

 mum brea^lth about 10-15 mm., narrowed at the transition point; 

 lower half of the length naked, upper and complanated part, 

 except the narrow region, bearing sporophylls. Midrib smooth, 

 complanated, 20-28 mm. broad, elevated above the blade on both 

 surfaces with slanting edges, continuous to the stipe below. Sporo- 

 phylls holosoric, 10-20 in number, pitmately arranged but closely 

 together on both margins of the comj^lanated part of stipe, adding 

 new ones successively upwards, 20-27 cm. in length, 4-5 cm. in 

 breadth, linear-oblong, more or less curved or sigmoid, with well- 

 defmed, short, terete petioles ; base of sporophyll obtuse, round or 

 cordate, generally asymmetrical ; tip roundish or obtuse. Sorus 

 generally formed in a continuous patch on both surfaces of sporo- 

 phyll, occupying the whole surface except a narrow border along 

 the margin, very often a certain terminal portion of a sporophyll 

 remaining sterile. 



Remarks on the species. This species is easily distinguished 

 from the others by the peculiarities of the sporophylls. Their size 

 and substance are ample to tell tlie species. A. fistidosa alone njay 

 be compared with the present in this respect, but their roundish 

 or cordate base is a cliaracter not duplicated in other species. 

 The thick coriaceous substance of the blade and the complanated 

 broad midrib also show unmistakable features of this species. A 

 conspicuous fine striation on the older parts of the blade must also 

 be mentioned as one of its remarkable specific distinctions. Briefiy 



