56 



Rhizome slender, repent, scaly, rooting ; roots with castnneo-piir- 

 purascent root-hairs; scales densely placed at the base of the stipe, 

 long-ovate, subulato-ovate, or ovato-lanceolate, acuminate, entire, mem- 

 branaceous, dark-ferruginous, often curly when dry, with fine and close 

 areoles. Leaves loosely placed on the rhizome, angustato-lanceolate or 

 linear-lanceolate, but often lanceolate in the sterile one, entire, more or 

 less recurved on margin when dry, shortly acuminate with an obtuse tip, 

 gradually attenuated below to a stipe, naked on both sides as well as 

 the stipe, thick, coriaceous but flaccid in recent, 9-28 cm. long including 

 the stipe, the sterile one attaining about 2 cm. wide, the fertile one nar- 

 rower than the sterile one and 5 mm. wide when is narrowest ; venation 

 immersed ; midrib slender, straight, prominent above ; veins erect-patent, 

 loose ; veinlets forming oblong or elongate areolae, those between veins 

 ])arallel to them in 2 or 3 rows, often with simple or furcate free- venule 

 within ; stipe slightly compressed, marginate with slender wings on both 

 sides, attaining about 6 cm. long. Sori in the middle and upper portions, 

 arranged midway between the midrib and margins, or slightly nearer to the 

 margin, straight, linear, sometimes oblong-linear, strongly oblique and only 

 approximate at the upper and lower ends each other, or sometimes arranged 

 nearly end to end in single vertical rows, placed between veins and parallel 

 to them, yellow in recent. Sporangia with a long pedicel. 



Nom. Jap. hoayanagi-sliida. 



Hah. Japan, middle and southern. 



This Fern is very closely allied to Loxogramme laneeolata (Swartz) 

 Presl ( = Gyvinogramme laneeolata Hook. — Polypodium Loxogramme Mett.), 

 but the latter one has the sori nearer to the midrib than to the margin 

 and areolae almost without free venule ; this is not found in Japan so far 

 as I know. The species collected by Wilford in Tsushima and by 

 Oldham in Nagasaki, and quoted under Gymnogramme laneeolata by Hooker 

 in his Species Filicum, V. p. 157, may be probably identical with ours. 



Loxogramme minor (Baker) Makino. 



Gymnogramme laneeolata var. minor Baker ex Maximowicz in litt. 

 1889 ; Makino in Bot. Mag., Tokyo, X. (1896) p. 178. 



Polypodium Loxogramme var. minor Matsum. Ind. PI. Jap. I. (1904) 

 p. 337. 



Polypodium yakushimce Christ in Bull. Herb. Boiss. 2 Ser. I. (1900) 

 p. 1014; Matsum. 1. c. p. 393. 



