Observations on the Flora of Japan. 



{Continued from p. 150.) 

 By 



T. Makino. 



Assistant in Botany, Science College, 

 Imperial University of Tokyo. 



Plagiogyria stenoptera (Hance) Diels in Engl, et Prantl, 

 Nat. Pfl.-Fam. I. 4, (1899), p. 282 ; Matsum. et Hayat. Enura. 

 PI. Formos. p. 615. 



Blechnum stenopterum Hance in Journ. Bot. (1883), p. 268. 



Lomaria stenoptera Baker in Ann. Bot. V. (1890-91), p. 

 220 ; Henry, List PI. Formos. p. 111. 



Lomaria concinna Baker in Journ. Bot. (1885), p. 103, et 

 in Hook. Icon. PI. XVII. (1886) tab. 1614. 



Plagiogyria Matsumureana Hayata in Bot. Mag., Tokyo, 

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



Plagiogyria auriculifera Makino in herb. 



Rhizome thick, ascending, densely rooting ; roots black, not 

 stout. Stipes shorter than the frond, 4-quetrous and 4-alate, 

 plane in back, compresso-triquetrous and slightly dilated at the 

 base, glabrous, dull viridescent above, castaneo-nigrescent below, 

 about 7—17 cm. long. Frond erect-patent but spreading above, 

 very deeply pinnati-parted, quite green, glabrous, membrana- 

 ceous, subpellucid, not firm, oblong-lanceolate or broadly lanceo- 

 late, subabruptly caudato-acumiuate, contracted below, 30—50 

 cm. rarelj- 60 cm. long, 8—15 cm. rarely 20 cm. broad ; rachis 

 prominent throughout but carinate above beneath ; segments 

 numerous, patent-divergent but patent below, approximate with 

 narrow sinuses, subdilated and ver\ r slightly contiguous to next 

 one, narrowly lanceolate, acuminate but often acute or obtuse 

 in the lower ones, serrulate towards the apex, the inferior few 

 to sub-many (about 2-14) ones deformed, very diminished in 

 size and auriculiform, more or less distantly disposed, the 



