iter. 1909.] MAKINO.— OBSERV. OX THE FLORA OF JAPAN. 245 



middle ones largest and 4-8 cm. rareW 11^ cm. long, 8-13 mm. 

 rarely 15 mm. broad ; midrib more or less prominent on both 

 sides ; veins delicate but distinct beneath, patulous, simple or 

 bifurcate, the venule sometimes again bifurcate. Fertile fronds 

 as long as the sterile fronds, erect ; stipe and rachis slender ; 

 pinnae many, loosely disposed, often secund, shorth' stipitate, 

 angustato-linear, acuminate, patent or erect-patent, but some- 

 times more or less reflexed in the lower ones, dark-green, the 

 inferior pinnae sterile and very diminished in size, deformed and 

 auriculiform. Sori orange- yellow ; spore A^ellow. 



Nom. Jap. Shima-yamasotetsu (nov.). 



Hah. Prov. Osdmi : Yaku-shima (T. Makino ! Sept. 1909); 

 Formosa : Daironkosha in Taito (T. Kawakami and U. Moril 

 herb. Sc. Coll. Imp. Univ. Tokyo, Nov. 30, 1906, no. 2357), 

 Tozan on Alt. Morrison (G. Xakahara ! herb. ibid. Dec. 190G). 



Plagiogyria Hayatana Makino, sp. nov. 



Plagiogyria Malsumureana Ha3'ata in Bot. Mag., Tokyo. 

 XXI. (1907), p. 11, ct Fl. Mont. Formos. in Journ. Coll. v Sc. 

 Imp. Univ. Tokyo, XXV. Art. 19 (1908), p. 21-1, non Makino, 

 cxcl. syn. 



Plagiogyria Malsumureana Hayata in Bot. Mag., Tokyo, 

 XXIII. (1909), p. 32, pro parte, non Makino. 



Rhizome erect, or ascending. Stipes triquetrous, exalate, 

 shorter than the frond, about 1 L'-20 em. long, the base depressed- 

 triquetrous and more or less dilated. Frond glabrous, more 

 or less firm, oblong or narrowly oblong, acuminate, very deeply 

 pinnati-parted, 30— 50cm. long, 12— 17mm. broad; segments 

 numerous, close bui sometimes subremote, patent or patent- 

 divergent, but usually somewhal reflexed in the basal ones, linear- 

 lanceolate, subfalcate, acuminate, slightly dilated ai the base, 

 serrulated (the serration more conspicuous towards the apex), 

 attaining about 9 cm. long, 1 cm, broad : midrib prominent on 

 both sides; veins patent-divergent, bifurcate and sometimes the 

 venule again bifurcate, simple in the superior ones; rachis cari- 



nate throughout beneath. Fertile fr I exceeding the sterile 



ones, long-stiped ; pinna' remotely and simple-pinnately dis- 



