904.] OBSERVATIONS ON THE FLORA OF JAPAN. 133 



An alpine fern, growing in rocky place. It resembles Woodsia gla- 

 bella R. Dr., but the latter differs by having the thin, membranaceous 

 and very obtuse pinnae and the short, nearly entire lobes. 



Woodsia (Euwoodsia) ilvensis (Linn.) R. Br. in Trans. Linn. Soc. 

 XL (1815) p. 173; Spreng. Syst. Veg. IV. (1827) p. 125; Ledeb. Fl. Alt. 

 IV. p. 330: Id. Fl. Ross. IV. p. 510 ; Kaulf. Enum. Fil. p. 251 ; Kunze 

 in Linmea XXIII. p. 297 ; Hook. Fl. Bor.-Am. II. p. 259 ; Id. Sp. Fil. I. p. 

 63 ; Id. Brit. Ferns, tab. 8 ; Benth. Handb. Brit. Fl. ed. 5, p. 567 ; A. Gray, 

 Man. Bot. ed. 5, p. 669 ; Eaton in Chapm. Fl. S. Un. St. p. 596 ; Met- 

 ten. Fil. Hort. Bot. Lips. p. 98 ; Eaton, Ferns N. Amer. II. p. Ill, tab. 

 60, fig. 5-8 ; Wood, Cl.-Book Bot. p. 822 ; Id. Amer. Bot. et Flor. p. 425 ; 

 Maxim. Prim. Fl. Amur. p. 337 ; Reg. et Til. Fl. Ajan. p. 128 ; Reg. Tent. 

 Fl. Ussur. n. 605 ; Hook, et Baker, Syn. Fil. ed. 2, p. 46 ; Lowe, Ferns Brit. 

 et Exot. VII. p. 67, tab. 28 ; Fr. Schm. Reis. im Amur. u. Ins. Sachal. p. 

 74; Miq. Prol. Fl. Jap. pp. 343, 390 ; Franch. et Sav. Enum. PI. Jap. II. p. 

 204 ; Franch. PI. David. I. p. 346 ; Kawakami, in Bot, Mag., Tokyo, XIV. 

 p. 106; Diels in Engler et Prantl, Nat. Pfi.-Fam. I. 4, p. 161, fig. 88, D, 

 E; Matsum. Ind. PI. Jap. I. p. 351. 



Acrosbiclmm ilvense Linn. Sp. PI. p. 1071, et ed. 2, p. 1528 ; Richt. 

 Cod. n. 7787; Houtt. Nat. Hist. XXXII. (1783) p. 83, et Linn. Pfl.-Syst. 

 XIII. (1786) p. 93. 



Polypodium ilvense Sw. Syn. Fil. (1806) p. 39 ; Willd. Sp. PI. V. p. 

 198; Schkuhr, Crypt. Gew. p. 16, tab. 19; Ait. Hurt. Kew. ed. 2, p. 505; 

 Presl, Tent. Pterid. p. 180. 



Woodsia hyperborea var. ilvensis Luers. 



Woodsia hyperborea subsp. ilvensis Hook. fil. Stud. Fl. Brit. Isl. ed. 

 3, p. 515. 



Polypodium Marantce Hoff'ra. Deutschl. Fl. II. p. 5. 



Polystichum Marantce Roth, ' Fl. Germ. III. p. 92.' 



Acrostichum Mavantai Pall. ' It. III. p. 293.' 



Nephrodium rufidulum Michx. Fl. Bor. Amer. II. p. 269. 



Aspidium rufidulum Sw. Syn. Fil. p. 58 ; Willd. Sp. PI. V. p. 282. 



Lastrea rufidula Presl, Tent. Pterid. p. 76. 

 Woodsia rufidula Beck. 



Woodsia hyperborea /?. rufidula Koch, Syn. Fl. Germ, et Helv. ed. 3, 

 p. 731 ; Milde, Fil. Eur. et Atl. p. 164. 



Woodsia hyperborea subsp. rufidula Korshinsky in Act. Hort, Petrop. 



